dotnetfactory 4 the dotnetfactory … dotnetfactory when qtp version 9.0 was released. ... another...
TRANSCRIPT
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DOTNETFACTORY .................................................................................................................... 4
THE DOTNETFACTORY OBJECT................................................................................................ 4 CREATEINSTANCE METHOD.................................................................................................. 4
QTP DOTNETFACTORY ............................................................................................................. 5 SYSTEM.DATETIME STRUCTURE............................................................................................... 9
SYSTEM.DATETIME FIELDS................................................................................................... 9 DateTime.MaxValue Field............................................................................................ 10 DateTime.MinValue Field ............................................................................................ 10
SYSTEM.DATETIME CONTRUCTORS.................................................................................... 10 DateTime.DateTime( int64 ) Constructor ..................................................................... 11 DateTime.DateTime ( int64, DateTimeKind ) Constructor .......................................... 12 DateTime.DateTime(Int32, Int32, Int32) Constructor .................................................. 14 DateTime.DateTime(Int32, Int32, Int32, Calendar) Constructor.................................. 15 DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32) Constructor................... 16 DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Calendar ) Constructor . 17 DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, DateTimeKind ) Constructor.................................................................................................................... 19 DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32 ) Constructor ....... 20 DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar ) Constructor.................................................................................................................... 20 DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, DateTimeKind ) Constructor.................................................................................................................... 21 DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar, DateTimeKind ) Constructor......................................................................................... 22
DATETIME PROPERTIES....................................................................................................... 23 DateTime.Date Property ............................................................................................... 24 DateTime.Day Property ................................................................................................ 25 DateTime.DayOfWeek Property................................................................................... 25 DateTime.DayOfYear Property .................................................................................... 26 DateTime.Hour Property............................................................................................... 27 DateTime.Kind Property ............................................................................................... 27 DateTime.Millisecond Property .................................................................................... 29 DateTime.Minute Property ........................................................................................... 29 DateTime.Month Property ............................................................................................ 29 DateTime.Now Property ............................................................................................... 29 DateTime.Second Property ........................................................................................... 30 DateTime.Ticks Property .............................................................................................. 30 DateTime.TimeOfDay Property.................................................................................... 30 DateTime.Today Property............................................................................................. 31 DateTime.UtcNow Property ......................................................................................... 31 DateTime.Year Property ............................................................................................... 32
DATETIME METHODS.......................................................................................................... 32 DateTime.Add ( TimeSpan ) Method ........................................................................... 34 DateTime.AddDays ( Double ) Method........................................................................ 35 DateTime.AddHours ( Double ) Method ...................................................................... 36 DateTime.AddMilliseconds ( Double ) Method ........................................................... 36 DateTime.AddMinutes ( Double ) Method ................................................................... 37 DateTime.AddMonths ( Integer ) Method .................................................................... 37
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DateTime.AddSeconds ( Double ) Method................................................................... 38 DateTime.AddTicks ( Long ) Method .......................................................................... 39 DateTime.AddYears ( Integer ) Method ....................................................................... 39 DateTime.Compare ( DateTime, DateTime ) Method .................................................. 40 DateTime.CompareTo ( DateTime ) Method................................................................ 40 DateTime.DaysInMonth ( Integer, Integer ) Method.................................................... 41 DateTime.Equals ( DateTime ) Method........................................................................ 45 DateTime.Equals ( DateTime, DateTime ) Method...................................................... 45 DateTime.FromBinary ( Long ) Method....................................................................... 46 DateTime.FromFileTime ( Long ) Method ................................................................... 47 DateTime.FromFileTimeUtc ( Long ) Method ............................................................. 48 DateTime.GetTimeFormats Method ............................................................................. 49 DateTime.GetTimeFormats () Method ......................................................................... 49 DateTime.GetTimeFormats ( Char ) Method................................................................ 50 DateTime.GetTimeFormats ( IFormatProvider ) Method............................................. 51 DateTime.GetTimeFormats ( Char, IFormatProvider ) Method ................................... 53 DateTime.GetHashCode () Method .............................................................................. 54 DateTime.GetTypeCode () Method .............................................................................. 55 DateTime.IsDaylightSavingTime () Method ................................................................ 55 DateTime.IsLeapYear ( Integer ) Method..................................................................... 56 DateTime.op_Addition ( DateTime, TimeSpan ) Method ............................................ 56 DateTime.op_Equality ( DateTime, DateTime ) Method ............................................. 57 DateTime.op_GreaterThan ( DateTime, DateTime ) Method....................................... 57 DateTime.op_GreaterThanOrEqual ( DateTime, DateTime ) Method ......................... 58 DateTime.op_Inequality ( DateTime, DateTime ) Method........................................... 58 DateTime.op_LessThan ( DateTime, DateTime ) Method ........................................... 59 DateTime.op_LessThanOrEqual ( DateTime, DateTime ) Method.............................. 59 DateTime.op_Subtraction Method................................................................................ 59 DateTime.op_Subtraction ( DateTime, DateTime ) Method ........................................ 59 DateTime.op_Subtraction ( DateTime, TimeSpan ) Method ........................................ 61 DateTime.Parse Method................................................................................................ 61 DateTime.Parse ( String ) Method ................................................................................ 62 DateTime.Parse ( String, IFormatProvider ) Method.................................................... 63 DateTime.Parse ( String, IFormatProvider, DateTimeStyles ) Method ........................ 64 DateTime.ParseExact Method....................................................................................... 65 DateTime.ParseExact ( String, String, IFormatProvider ) Method............................... 66 DateTime.ParseExact ( String, String, IFormatProvider, DateTimeStyles ) Method ... 67 DateTime.ParseExact ( String, String[], IFormatProvider, DateTimeStyles ) Method. 68 DateTime.SpecifyKind ( DateTime, DateTimeKind ) Method..................................... 70 DateTime.Subtract Method ........................................................................................... 71 DateTime.Subtract ( DateTime ) Method ..................................................................... 71 DateTime.Subtract ( TimeSpan ) Method ..................................................................... 72 DateTime.ToFileTime () Method.................................................................................. 73 DateTime.ToFileTimeUtc () Method............................................................................ 74 DateTime.ToLocalTime () Method............................................................................... 74 DateTime.ToLongDateString () Method....................................................................... 75 DateTime.ToLongTimeString () Method...................................................................... 77 DateTime.ToShortDateString () Method ...................................................................... 77 DateTime.ToShortTimeString () Method ..................................................................... 78 DateTime.ToString Method .......................................................................................... 79 DateTime.ToString () Method ...................................................................................... 79
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DateTime.ToString ( IFormatProvider ) Method.......................................................... 82 DateTime.ToString ( String ) Method........................................................................... 83 DateTime.ToString ( String, IFormatProvider ) Method .............................................. 85 DateTime.ToUniversalTime () Method ........................................................................ 86 DateTime.TryParse Method.......................................................................................... 86 DateTime.TryParse ( String, DateTime ) Method......................................................... 87 DateTime.TryParse ( String, IFormatProvider, DateTimeStyles, DateTime ) Method 88 DateTime.TryParseExact Method................................................................................. 89 DateTime.TryParse ( String, String, IFormatProvider, DateTimeStyles, DateTime ) Method .......................................................................................................................... 89 DateTime.TryParse ( String, String[], IFormatProvider, DateTimeStyles, DateTime ) Method .......................................................................................................................... 90
SYSTEM.TIMESPAN STRUCTURE ............................................................................................. 92 SYSTEM.TIMESPAN CONTRUCTORS .................................................................................... 92
DateTime.TimeSpan ( int64 ) Constructor.................................................................... 92 DateTime.TimeSpan ( int32, int32, int32 ) Constructor ............................................... 94 DateTime.TimeSpan ( int32, int32, int32, int32 ) Constructor ..................................... 95 DateTime.TimeSpan ( int32, int32, int32, int32, int32 ) Constructor........................... 96
SYSTEM.TIMESPAN FIELDS ................................................................................................. 98 TimeSpan.MaxValue Field ........................................................................................... 98 TimeSpan.MinValue Field............................................................................................ 99 TimeSpan.TicksPerDay Field ....................................................................................... 99 TimeSpan.TicksPerHour Field...................................................................................... 99 TimeSpan.TicksPerMillisecond Field......................................................................... 100 TimeSpan.TicksPerMinute Field ................................................................................ 100 TimeSpan.TicksPerSecond Field ................................................................................ 100 TimeSpan.Zero Field................................................................................................... 100
TIMESPAN PROPERTIES ..................................................................................................... 100 TimeSpan.Days Property ............................................................................................ 101 TimeSpan.Hours Property........................................................................................... 103 TimeSpan.Milliseconds Property ................................................................................ 104 TimeSpan.Minutes Property ....................................................................................... 104 TimeSpan.Seconds Property ....................................................................................... 105 TimeSpan.Ticks Property............................................................................................ 105 TimeSpan.TotalDays Property .................................................................................... 105 TimeSpan.TotalHours Property .................................................................................. 106 TimeSpan.TotalMilliseconds Property........................................................................ 106 TimeSpan.TotalMinutes Property ............................................................................... 107 TimeSpan.TotalSeconds Property............................................................................... 107
TIMESPAN METHODS ........................................................................................................ 107 TimeSpan.Add ( TimeSpan ) Method......................................................................... 109 DateTime.Compare ( TimeSpan, TimeSpan ) Method ............................................... 110 TimeSpan.CompareTo ( TimeSpan ) Method............................................................. 112 TimeSpan.Duration ( ) Method ................................................................................... 113 TimeSpan.Equals Method ........................................................................................... 114 TimeSpan.Equals ( TimeSpan ) Method..................................................................... 114 TimeSpan.Equals ( TimeSpan, TimeSpan ) Method................................................... 115 TimeSpan.FromDays ( Double ) Method.................................................................... 115 TimeSpan.FromHours ( Double ) Method .................................................................. 117 TimeSpan.FromMilliseconds ( Double ) Method ....................................................... 119 TimeSpan.FromMinutes ( Double ) Method............................................................... 121
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TimeSpan.FromSeconds ( Double ) Method............................................................... 122 TimeSpan.FromTicks ( Long ) Method ...................................................................... 123 TimeSpan.GetHashCode ( ) Method........................................................................... 124 TimeSpan.Negate ( ) Method...................................................................................... 125 TimeSpan.op_Addition ( TimeSpan, TimeSpan ) Method ......................................... 126 TimeSpan.op_Equality ( TimeSpan, TimeSpan ) Method.......................................... 128 TimeSpan.op_GreaterThan ( TimeSpan, TimeSpan ) Method ................................... 130 TimeSpan.op_GreaterThanOrEqual ( TimeSpan, TimeSpan ) Method...................... 130 TimeSpan.op_Inequality ( TimeSpan, TimeSpan ) Method ....................................... 130 TimeSpan.op_LessThan ( TimeSpan, TimeSpan ) Method........................................ 131 TimeSpan.op_LessThanOrEqual ( TimeSpan, TimeSpan ) Method .......................... 131 TimeSpan.op_Subtraction ( TimeSpan, TimeSpan ) Method ..................................... 132 TimeSpan.op_UnaryNegation ( ) Method................................................................... 132 TimeSpan.op_UnaryPlus ( ) Method .......................................................................... 133 TimeSpan.Parse ( String ) Method.............................................................................. 133 TimeSpan.Subtract ( TimeSpan ) Method................................................................... 135 TimeSpan.ToString ( String ) Method ........................................................................ 136 TimeSpan.TryParse ( String, TimeSpan ) Method...................................................... 136
DOTNETFACTORY TASKS ...................................................................................................... 137 WORLD CALENDARS ......................................................................................................... 137 SYSTEM.COLLECTIONS.ARRAYLIST ................................................................................. 140 CALLCHAIN USING SYSTEM.COLLECTIONS.STACK .......................................................... 141
APPENDIX 14.A – ENUMERATIONS ........................................................................................ 144 System.DateTimeKind Enumeration .......................................................................... 145 System.DayOfWeek Enumeration .............................................................................. 145 Standard DateTime Format Strings............................................................................. 145 Custom DateTime Format Strings .............................................................................. 146 System.Globalization.DateTimeStyles Enumeration .................................................. 150
DotNetFactory
The DotNetFactory Object
Enables you to create an instance of a .NET object, and access its methods and properties.
You can use this object to access the static methods and properties of a class that
does not have an instance constructor, for example, System.Environment, as well as a class that does.
CreateInstance Method
Returns a COM interface for a .NET object
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If you want to use a .NET object as an argument for a method in QuickTest, you must first create a COM interface for the .NET object using the CreateInstance method. Then you pass that interface as the method argument.
Set var_CreateInstance = DotNetFactory.CreateInstance (TypeName [,Assembly] [,args])
Parameter Description
TypeName The full name of the object type, for example, System.Windows.Forms.Form.
Assembly
Optional. If the assembly is preloaded in the registry, you do not need to enter it. Otherwise, you should enter the full path name, for example, System.Windows.Forms. If you want to create an instance of a type in the GAC (Global Assembly Cache), you can enter the short name, for example, Forms.
Note: If you do not pass this argument, QuickTest assumes that the assembly is resident in memory. If QuickTest does not find the assembly, an error message is displayed during the run session.
args Optional. The required arguments, if any, for the specified TypeName and/or Assembly
A Variant value. Returns the defined instance of the .NET object.
QTP DotNetFactory
When QTP version 9.0 was released. I have noticed that a new utility object was added,the DotNetFactory object.
Since, that period of time, I was working on a web application, I thought myself , that DotNetFactory is a utility to work with .NET applications, like the DOT.NET Extensibility
In QTP Version 9.2, I so the following example in the QTP help
Set var_CreateInstance = _
DotNetFactory.CreateInstance("System.Windows.Forms.Form", "System.Windows.Forms")
var_CreateInstance.Show
wait 2
var_CreateInstance.Close
And also
Set var_CreateInstance = DotNetFactory.CreateInstance("System.Environment")
msgbox var_CreateInstance.CurrentDirectory
The first example display an empty windows form. I started to think, why I need to display a form , during a test run. The second example catch my eye, and when I tried it in qtp, I got the following result :
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"wow!!" I said to my self, nice to know that I can have every single environment value of the system, especially SystemDirectory property. The others values, can be retrieved using standard VBScript objects and QTP Environment object. So, again … I did not paid attention and full research for the dot.net factory.
One month later, I add an issue when testing a financial application. The application ( web based ) shows the interests to pay for each month. Because the application is a bank system application, I can't show screenshots. But a web table was displayed in the following format :
Date Amount
Tue, 12 Sep 2006 2500$
Thu, 12 Oct 2006 2490$
Sun, 12 Nov 2006 2475$
Tue, 12 Dec 2006 2466$
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Fri, 12 Jan 2007 2390$
Mon, 12 Feb 2007 2285$
My problem here, were the dates. VBScript doesn't able to convert formats, to the specific format I needed, and beside this, any user can change the display format to : mm/dd/yyyy or mmddyy or dd\mm\yy etc.
dteDate = Cdate( "Tue, 12 Sep 2006" )
Because the CDate conversion error, in pure vbscript I need a function like the follows
Option Explicit
Dim arr1, arr2, MyDate, nMonth, dteDate
MyDate = Browser("B").Page("P").WebTable("rates").GetCellData(1,1) arr1 = Split( MyDate, "," )
arr2 = Split( arr1(1), " " )
Select Case arr2(2)
Case "Jan" : nMonth = 1
Case "Feb" : nMonth = 2
Case "Mar" : nMonth = 3
Case "Apr" : nMonth = 4
Case "May" : nMonth = 5
Case "Jun" : nMonth = 6
Case "Jul" : nMonth = 7
Case "Aug" : nMonth = 8
Case "Sep" : nMonth = 9
Case "Oct" : nMonth = 10
Case "Nov" : nMonth = 11
Case "Dec" : nMonth = 12
End Select
dteDate = DateSerial(arr2(3), nMonth, arr2(1))
msgbox dteDate
This process only to retrieve the first date, than, I have to use the DateAdd function, and another function to convert the new date, to the desired format. As you can see, this is a lot of work, beside, that the user can change the formats.
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The application has hundreds of date fields, and dates fields are very critical for the application.
From this moment I start to make a research, to find a simplest and elegant solution.
I found the System.DateTime object in the MSDN DOT.NET help, and remember immediately of the QTP example about the System.Environment object So I tried the follow :
Option Explicit
Dim DateTime
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
A little more research, using the MSDN help I got the ultimate date handling functionality
Option Explicit
Dim DateTime, SystemDateTime, i, Str
Set SystemDateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set DateTime = SystemDateTime.Parse( "Tue, 12 Sep 2006" )
For i = 1 To 12
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Str = Str & DateTime.AddMonths(i).ToString( "ddd, dd MMM yyyy" ) & vbNewLine
Next
Msgbox Str
Set SystemDateTime = Nothing : Set DateTime = Nothing
So, the conclusion of all my research, is that you can use almost any DOT.NET object supported by your Dot.Net Framework ( today is version 3 ) , so this chapter of DotNetFactory will demonstrate only the System.DateTime and System.TimeSpan classes. In some examples I use The System.Text.TextBuilder class, System.Globalization.CultureInfo class, System.DateTimeKind Enumerator, System.Globalization.Calendar and more
System.DateTime Structure
Represents an instant in time, typically expressed as a date and time of day.
The DateTime value type represents dates and times with values ranging from 12:00:00 midnight, January 1, 0001 Anno Domini (Common Era) through 11:59:59 P.M., December 31, 9999 A.D. (C.E.)
Time values are measured in 100-nanosecond units called ticks, and a particular date is the number of ticks since 12:00 midnight, January 1, 0001 A.D. (C.E.) in the GregorianCalendar calendar. For example, a ticks value of 31241376000000000L represents the date, Friday, January 01, 0100 12:00:00 midnight. A DateTime value is always expressed in the context of an explicit or default calendar.
More information can be found in the following link : http://msdn2.microsoft.com/en-us/library/system.datetime.aspx
System.DateTime Fields
Name Description
MaxValue Represents the largest possible value of DateTime. This field is read-only.
MinValue Represents the smallest possible value of DateTime. This field is read-only
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DateTime.MaxValue Field
Represents the largest possible value of DateTime. This field is read-only
The value of this constant is equivalent to 00:00:00.0000000, January 1, 0001.
DateTime.MinValue Field
Represents the smallest possible value of DateTime. This field is read-only
The value of this constant is equivalent to 23:59:59.9999999, December 31, 9999,
exactly one 100-nanosecond tick before 00:00:00, January 1, 10000.
System.DateTime Contructors
Initializes a new instance of the DateTime structure.
Name Description
DateTime (Int64) Initializes a new instance of the DateTime structure to a specified number of ticks.
DateTime (Int64, DateTimeKind) Initializes a new instance of the DateTime structure to a specified number of ticks and to Coordinated Universal Time (UTC) or local time.
DateTime (Int32, Int32, Int32) Initializes a new instance of the DateTime structure to the specified year, month, and day.
DateTime (Int32, Int32, Int32, Calendar)
Initializes a new instance of the DateTime structure to the specified year, month, and day for the specified calendar.
DateTime (Int32, Int32, Int32, Int32, Int32, Int32)
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, and second.
DateTime (Int32, Int32, Int32, Int32, Int32, Int32, Calendar)
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, and second for the specified calendar.
DateTime (Int32, Int32, Int32, Int32, Int32, Int32, DateTimeKind)
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, and Coordinated Universal Time (UTC) or local time.
DateTime (Int32, Int32, Int32, Int32, Int32, Int32, Int32)
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, and millisecond.
DateTime (Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar)
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, and millisecond for the specified calendar.
DateTime (Int32, Int32, Int32, Initializes a new instance of the DateTime structure
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Int32, Int32, Int32, Int32, DateTimeKind)
to the specified year, month, day, hour, minute, second, millisecond, and Coordinated Universal Time (UTC) or local time.
DateTime (Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar, DateTimeKind)
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, millisecond, and Coordinated Universal Time (UTC) or local time for the specified calendar.
DateTime.DateTime( int64 ) Constructor
Initializes a new instance of the DateTime structure to a specified number of ticks.
Set object = DotNetFactory.CreateInstance( "System.DateTime", , ticks )
Parameter Description
ticks A date and time expressed in 100-nanosecond units.
System.DateTime object
The Kind property is initialized to Unspecified.
ArgumentOutOfRangeException - ticks is less than MinValue or greater than
MaxValue.
The following code example demonstrates one of the DateTime constructors
Option Explicit
Dim SDT, dtMax, dtMin, dtCustom
Dim format
Dim SB, CI, ticks
format = "{0}) The {1} date and time is {2:MM/dd/yyyy hh:mm:ss tt}{3}"
Set SDT = DotNetFactory.CreateInstance( "System.DateTime" )
' ** Create a DateTime for the maximum date and time using ticks
Set dtMax = DotNetFactory.CreateInstance( "System.DateTime", , SDT.MaxValue.Ticks )
' ** Create a DateTime for the minimum date and time using ticks.
Set dtMin = DotNetFactory.CreateInstance( "System.DateTime", , SDT.MinValue.Ticks )
' ** Create a custom DateTime for 7/28/1979 at 10:35:05 PM using a calendar based on ' the "en-US" culture, and ticks.
Set CI = DotNetFactory.CreateInstance( _
"System.Globalization.CultureInfo", _
"System", "en-US", False _
)
Set ticks = DotNetFactory.CreateInstance( _ "System.DateTime", ,1979, 7, 28, 22, 35, 5, CI.Calendar _
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).Ticks
Set dtCustom = DotNetFactory.CreateInstance( "System.DateTime", , ticks )
' ** Reporting
Set SB = DotNetFactory.CreateInstance( "System.Text.StringBuilder" )
SB.AppendFormat format, 1, "maximum", dtMax, vbNewLine
SB.AppendFormat format, 2, "minimum", dtMin, vbNewLine
SB.AppendFormat format, 3, "custom", dtCustom, vbNewLine
SB.AppendFormat "The custom datetime is created from {0:N0} ticks.", ticks
Msgbox SB.ToString(), vbOkOnly, "DateTime( ticks )"
' ** Cleaning
Set SB = Nothing : Set CI = Nothing
Set dtCustom = Nothing : Set ticks = Nothing
Set dtMin = Nothing : Set dtMax = Nothing : Set SDT = Nothing
DateTime.DateTime ( int64, DateTimeKind ) Constructor
Initializes a new instance of the DateTime structure to a specified number of ticks and to Coordinated Universal Time (UTC) or local time.
Set object = DotNetFactory.CreateInstance( "System.DateTime", , ticks, kind )
Parameter Description
ticks A date and time expressed in 100-nanosecond units.
kind One of the DateTimeKind values that indicates whether ticks specifies a local time, Coordinated Universal Time (UTC), or neither.
System.DateTime object
ArgumentOutOfRangeException - ticks is less than MinValue or greater than
MaxValue.
ArgumentException - Kind is not one of the DateTimeKind values.
The following code example uses the SpecifyKind method to demonstrate how the Kind property influences the ToLocalTime and ToUniversalTime conversion methods.
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Option Explicit
Const DATE_PATTERN = "M/d/yyyy hh:mm:ss tt"
Dim DateTime, saveNow, saveUtcNow, myDt
Dim DateTimeKind
Private Sub DisplayNow( ByVal title, ByRef inputDt )
Dim dtString
dtString = inputDt.ToString( DATE_PATTERN )
Print title & " " & dtString & ", Kind = " & inputDt.Kind
End Sub
Public Sub Display( ByVal title, ByRef inputDt )
Dim dispDt, dtString
Set dispDt = inputDt
' ** Display the original DateTime.
dtString = dispDt.ToString( DATE_PATTERN )
Print title & " " & dtString & ", Kind = " & dispDt.Kind
' ** Convert inputDt to local time and display the result.
' ** If inputDt.Kind is DateTimeKind.Utc, the conversion is performed.
' ** If inputDt.Kind is DateTimeKind.Local, the conversion is not performed.
' ** If inputDt.Kind is DateTimeKind.Unspecified, the conversion is
' ** performed as if inputDt was universal time.
Set dispDt = inputDt.ToLocalTime()
dtString = dispDt.ToString( DATE_PATTERN )
Print "ToLocalTime: " & dtString & ", Kind = " & dispDt.Kind
' ** Convert inputDt to universal time and display the result.
' ** If inputDt.Kind is DateTimeKind.Utc, the conversion is not performed.
' ** If inputDt.Kind is DateTimeKind.Local, the conversion is performed.
' ** If inputDt.Kind is DateTimeKind.Unspecified, the conversion is
' ** performed as if inputDt was local time.
Set dispDt = inputDt.ToUniversalTime()
dtString = dispDt.ToString( DATE_PATTERN )
Print "ToUniversalTime: " & dtString & ", Kind = " & dispDt.Kind & vbNewLine
End Sub 'Display
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
' ** Get the date and time for the current moment, adjusted to the local time zone.
Set saveNow = DateTime.Now
' ** Get the date and time for the current moment expressed as coordinated universal ' time (UTC).
Set saveUtcNow = DateTime.UtcNow
' ** Display the value and Kind property of the current moment expressed as UTC and ' local time.
Call DisplayNow( "UtcNow: ..........", saveUtcNow )
Call DisplayNow( "Now: .............", saveNow )
' ** Change the Kind property of the current moment to DateTimeKind.Utc and display ' the result.
Set DateTimeKind = DotNetFactory.CreateInstance( "System.DateTimeKind" )
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Set myDt = DateTime.SpecifyKind( saveNow, DateTimeKind.Utc )
Call Display( "Utc: .............", myDt )
' ** Change the Kind property of the current moment to DateTimeKind.Local and ' ' ' display the result.
Set myDt = DateTime.SpecifyKind( saveNow, DateTimeKind.Local )
Call Display( "Local: ...........", myDt )
' ** Change the Kind property of the current moment to DateTimeKind.Unspecified and ' display the result.
Set myDt = DateTime.SpecifyKind( saveNow, DateTimeKind.Unspecified )
Call Display( "Unspecified: .....", myDt )
Set myDt = Nothing : Set DateTimeKind = Nothing : Set DateTime = Nothing
Set saveNow = Nothing : Set saveUtcNow = Nothing
DateTime.DateTime(Int32, Int32, Int32) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, and day.
Set object = DotNetFactory.CreateInstance( "System.DateTime", , year, month, day )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
System.DateTime object
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ArgumentOutOfRangeException .
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
ArgumentException - The specified parameters evaluate to less than MinValue or more than MaxValue.
The following code example uses the SpecifyKind method to demonstrate how the Kind property influences the ToLocalTime and ToUniversalTime conversion methods.
Option Explicit
Dim DateTime
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime", ,1979, 7, 28)
MsgBox DateTime.ToString()
Set DateTime = Nothing
DateTime.DateTime(Int32, Int32, Int32, Calendar) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, and day for the specified calendar.
Set object = DotNetFactory.CreateInstance( "System.DateTime", , year, month, day, calendar )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
Day The day (1 through the number of days in month).
calendar The Calendar that applies to this DateTime.
System.DateTime object
ArgumentNullException - calendar is a null reference (Nothing in Visual Basic).
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ArgumentOutOfRangeException .
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
ArgumentException - The specified parameters evaluate to less than MinValue or more than MaxValue.
The time of day for the resulting DateTime is midnight (00:00:00). The Kind
property is initialized to Unspecified
The allowable values for year, month, and day depend on calendar. An exception is thrown if the specified date and time cannot be expressed using calendar.
The System.Globalization namespace provides several calendars including GregorianCalendar and JulianCalendar.
The following code example uses the SpecifyKind method to demonstrate how the Kind property influences the ToLocalTime and ToUniversalTime conversion methods.
Option Explicit
Dim DateTime
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime", ,1979, 7, 28)
MsgBox DateTime.ToString()
Set DateTime = Nothing
DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, and second.
Set object = DotNetFactory.CreateInstance( "System.DateTime", , year, month, day, hour, minute, second )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
hour The hours (0 through 23).
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minute The minutes (0 through 59).
second The seconds (0 through 59).
System.DateTime object
ArgumentOutOfRangeException .
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
hour is less than 0 or greater than 23.
minute is less than 0 or greater than 59.
second is less than 0 or greater than 59.
ArgumentException - The specified parameters evaluate to less than MinValue or more than MaxValue.
The Kind property is initialized to Unspecified.
The following code example demonstrates one of the DateTime constructors.
Option Explicit
Dim DateTime
Set DateTime = _
DotNetFactory.CreateInstance( "System.DateTime", ,1979, 7, 28, 12, 23, 32 )
Print DateTime.ToString
Print DateTime.ToString( "F" )
Print DateTime.ToString( "R" )
Print DateTime.ToString( "G" )
Set DateTime = Nothing
DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Calendar ) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, and second for the specified calendar.
Set object = DotNetFactory.CreateInstance(
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"System.DateTime", , year, month, day, hour, minute, second, calendar )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
hour The hours (0 through 23).
minute The minutes (0 through 59).
second The seconds (0 through 59).
calendar The Calendar that applies to this DateTime.
System.DateTime object
ArgumentOutOfRangeException .
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
hour is less than 0 or greater than 23.
minute is less than 0 or greater than 59.
second is less than 0 or greater than 59.
ArgumentException - The specified parameters evaluate to less than MinValue or more than MaxValue.
ArgumentNullException - calendar is a null reference (Nothing in Visual Basic).
The Kind property is initialized to Unspecified.
The allowable values for year, month, and day depend on calendar. An exception is thrown if the specified date and time cannot be expressed using calendar.
The System.Globalization namespace provides several calendars including GregorianCalendar and JulianCalendar.
The following code example demonstrates one of the DateTime constructors.
Option Explicit
Const HEBREW_CAL = "System.Globalization.HebrewCalendar"
Dim Datetime, cal
Set cal = DotNetFactory.CreateInstance( HEBREW_CAL, "System" )
Set DateTime = DotNetFactory.CreateInstance( _
"System.DateTime", , 5767, 3, 14, 4, 10, 5, cal ) MsgBox DateTime.ToString( "F" )
Set DateTime = Nothing: Set cal = Nothing
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DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, DateTimeKind ) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, and Coordinated Universal Time (UTC) or local time.
Set object = DotNetFactory.CreateInstance( "System.DateTime", , year, month, day, hour, minute, second, kind )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
hour The hours (0 through 23).
minute The minutes (0 through 59).
second The seconds (0 through 59).
kind One of the DateTimeKind values that indicates whether year, month, day, hour, minute and second specify a local time, Coordinated Universal Time (UTC), or neither.
System.DateTime object
ArgumentOutOfRangeException .
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
hour is less than 0 or greater than 23.
minute is less than 0 or greater than 59.
second is less than 0 or greater than 59.
ArgumentException
The specified parameters evaluate to less than MinValue or more than MaxValue.
Kind is not one of the DateTimeKind values.
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DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32 ) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second and millisecond
Set object = DotNetFactory.CreateInstance( "System.DateTime", , _ year, month, day, hour, minute, second, millisecond )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
hour The hours (0 through 23).
minute The minutes (0 through 59).
second The seconds (0 through 59).
millisecond The milliseconds (0 through 999).
System.DateTime object
ArgumentOutOfRangeException.
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
hour is less than 0 or greater than 23.
minute is less than 0 or greater than 59.
second is less than 0 or greater than 59.
millisecond is less than 0 or greater than 999.
ArgumentException
The specified parameters evaluate to less than MinValue or more than MaxValue.
DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar ) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, and millisecond for the specified calendar.
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Set object = DotNetFactory.CreateInstance( "System.DateTime", , _ year, month, day, hour, minute, second, millisecond, calendar )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
hour The hours (0 through 23).
minute The minutes (0 through 59).
second The seconds (0 through 59).
millisecond The milliseconds (0 through 999).
calendar The Calendar that applies to this DateTime.
System.DateTime object
ArgumentOutOfRangeException .
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
hour is less than 0 or greater than 23.
minute is less than 0 or greater than 59.
second is less than 0 or greater than 59.
millisecond is less than 0 or greater than 999.
ArgumentException - The specified parameters evaluate to less than MinValue or more than MaxValue.
ArgumentNullException - calendar is a null reference (Nothing in Visual Basic).
The Kind property is initialized to Unspecified.
The allowable values for year, month, and day depend on calendar. An exception is thrown if the specified date and time cannot be expressed using calendar.
The System.Globalization namespace provides several calendars including GregorianCalendar and JulianCalendar.
DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, DateTimeKind ) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, millisecond, and Coordinated Universal Time (UTC) or local time.
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Set object = DotNetFactory.CreateInstance( "System.DateTime", , _ year, month, day, hour, minute, second, millisecond, kind )
Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
hour The hours (0 through 23).
minute The minutes (0 through 59).
second The seconds (0 through 59).
millisecond The milliseconds (0 through 999).
kind One of the DateTimeKind values that indicates whether year, month, day, hour, minute, second, and millisecond specify a local time, Coordinated Universal Time (UTC), or neither.
System.DateTime object
ArgumentOutOfRangeException .
year is less than 1 or greater than 9999
month is less than 1 or greater than 12.
day is less than 1 or greater than the number of days in month.
hour is less than 0 or greater than 23.
minute is less than 0 or greater than 59.
second is less than 0 or greater than 59.
millisecond is less than 0 or greater than 999.
ArgumentException
The specified parameters evaluate to less than MinValue or more than MaxValue.
Kind is not one of the DateTimeKind values.
DateTime.DateTime(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Calendar, DateTimeKind ) Constructor
Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, millisecond, and Coordinated Universal Time (UTC) or local time for the specified calendar.
Set object = DotNetFactory.CreateInstance( "System.DateTime", , _ year, month, day, hour, minute, second, millisecond, calendar, kind )
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Parameter Description
year The year (1 through 9999).
month The month (1 through 12).
day The day (1 through the number of days in month).
hour The hours (0 through 23).
minute The minutes (0 through 59).
second The seconds (0 through 59).
millisecond The milliseconds (0 through 999).
calendar The Calendar object that applies to this DateTime.
kind One of the DateTimeKind values that indicates whether year, month, day, hour, minute, second, and millisecond specify a local time, Coordinated Universal Time (UTC), or neither.
System.DateTime object
ArgumentOutOfRangeException .
year is not in the range supported by calendar.month is less than 1 or greater than 12.
month is less than 1 or greater than the number of months in calendar.
day is less than 1 or greater than the number of days in month.hour is less than 0 or greater than 23.
hour is less than 0 or greater than 23.
minute is less than 0 or greater than 59.
second is less than 0 or greater than 59.
millisecond is less than 0 or greater than 999.
ArgumentException
The specified parameters evaluate to less than MinValue or more than MaxValue.
kind is not one of the DateTimeKind values.
ArgumentNullException - calendar is a null reference (Nothing in Visual Basic).
The allowable values for year, month, and day parameters depend on the calendar
parameter. An exception is thrown if the specified date and time cannot be expressed using calendar.
The System.Globalization namespace provides several calendars including GregorianCalendar and JulianCalendar.
DateTime Properties
Name Description
Date Gets the date component of this instance.
Day Gets the day of the month represented by this instance.
DayOfWeek Gets the day of the week represented by this instance.
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DayOfYear Gets the day of the year represented by this instance.
Hour Gets the hour component of the date represented by this instance.
Kind Gets a value that indicates whether the time represented by this instance is based on local time, Coordinated Universal Time (UTC), or neither.
Millisecond Gets the milliseconds component of the date represented by this instance.
Minute Gets the minute component of the date represented by this instance.
Month Gets the month component of the date represented by this instance.
Now Gets a DateTime object that is set to the current date and time on this computer, expressed as the local time.
Second Gets the seconds component of the date represented by this instance.
Ticks Gets the number of ticks that represent the date and time of this instance.
TimeOfDay Gets the time of day for this instance.
Today Gets the current date.
UtcNow Gets a DateTime object that is set to the current date and time on this computer, expressed as the Coordinated Universal Time (UTC).
Year Gets the year component of the date represented by this instance.
DateTime.Date Property
Gets the date component of this instance.
object.Date
A new DateTime with the same date as this instance, and the time value set to 12:00:00 midnight (00:00:00).
The following example returns the Date value of Now method
Option Explicit
Dim DateTime
Dim oToday, oFuture
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set oToday = DateTime.Today()
Set oFuture = oToday.AddDays( 7 )
Print "Today : " & oToday.Date()
Print "Future + 7 : " & oFuture.Date()
' ** Cleaning objects
Set DateTime = Nothing
Set oToday = Nothing : Set oFuture = Nothing
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DateTime.Day Property
Gets the day of the month represented by this instance.
Value = object.Date
The day component, expressed as a value between 1 and 31.
The following example returns the Date value of Now method
Option Explicit
Dim DateTime
Dim oToday, oFuture
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set oToday = DateTime.Today()
Set oFuture = oToday.AddHours( 24 )
Print "Today : " & oToday.Day
Print "Future + 24h : " & oFuture.Day
' ** Cleaning objects
Set DateTime = Nothing
Set oToday = Nothing : Set oFuture = Nothing
DateTime.DayOfWeek Property
Gets the day of the week represented by this instance.
Value = object.DayOfWeek
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A DayOfWeek enumerated constant that indicates the day of the week. This property value ranges from zero, indicating Sunday, to six, indicating Saturday.
The following example returns the Date value of Now method
Option Explicit
Dim DateTime
Dim oToday, oFuture, i
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set oToday = DateTime.Today()
For i = 1 To 7
Set oFuture = oToday.AddDays( i )
Print oFuture.DayOfWeek.GetHashCode & " --> " & oFuture.DayOfWeek Next
' ** Cleaning objects
Set DateTime = Nothing
Set oToday = Nothing : Set oFuture = Nothing
DateTime.DayOfYear Property
Gets the day of the year represented by this instance
object.DayOfYear
The day of the year, expressed as a value between 1 and 366.
The following example returns the Day of The year for Today
Msgbox DotNetFactory.CreateInstance( "System.DateTime" ).Today.DayOfYear
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DateTime.Hour Property
Gets the hour component of the date represented by this instance.
object.Hour
The hour component, expressed as a value between 0 and 23.
The following code example demonstrates the Hour property.
Option Explicit
Dim moment
Set moment = DotNetFactory.CreateInstance( _ "System.DateTime",, 1999, 1, 13, 3, 57, 32, 11 _
)
Print "Year --> " & moment.Year ' ** Year gets 1999.
Print "Month --> " & moment.Month ' ** Month gets 1 (January).
Print "Day --> " & moment.Day ' ** Day gets 13.
Print "Hour --> " & moment.Hour ' ** Hour gets 3.
Print "Minute --> " & moment.Minute ' ** Minute gets 57.
Print "Second --> " & moment.Second ' ** Second gets 32.
Print "Millisecond --> " & moment.Millisecond ' ** Millisecond gets 11.
Set moment = Nothing
DateTime.Kind Property
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Gets a value that indicates whether the time represented by this instance is based on local time, Coordinated Universal Time (UTC), or neither.
object.Kind
One of the DateTimeKind values. The default is Unspecified.
The following example uses Item to retrieve the FolderItem object representing the Windows folder and filtering the content
Option Explicit
Dim saveNow, saveUtcNow, myDt
Dim DateTimeKind
Set DateTimeKind = DotNetFactory.CreateInstance( "System.DateTimeKind" )
Set saveNow = DotNetFactory.CreateInstance( "System.DateTime" ).Now
Print "saveNow = " & saveNow.Kind.GetHashCode & " --> " & saveNow.Kind
Set saveUtcNow = DotNetFactory.CreateInstance( "System.DateTime" ).UtcNow
Print "saveUtcNow = " & saveUtcNow.Kind.GetHashCode & " --> " & saveUtcNow.Kind
Set myDt = _ DotNetFactory.CreateInstance( "System.DateTime" ).SpecifyKind( _ saveNow, DateTimeKind.Utc _ )
Print "myDt = " & myDt.Kind.GetHashCode & " --> " & myDt.Kind
Set myDt = DotNetFactory.CreateInstance( "System.DateTime" ).SpecifyKind( _ saveNow, DateTimeKind.Local _ )
Print "myDt = " & myDt.Kind.GetHashCode & " --> " & myDt.Kind
Set myDt = DotNetFactory.CreateInstance( "System.DateTime" ).SpecifyKind( _ saveNow, DateTimeKind.Unspecified _ )
Print "myDt = " & myDt.Kind.GetHashCode & " --> " & myDt.Kind
' ** Cleaning objects
Set DateTimeKind = Nothing : Set saveNow = Nothing
Set saveUtcNow = Nothing : Set myDt = Nothing
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DateTime.Millisecond Property
Gets the milliseconds component of the date represented by this instance.
Value = object.Millisecond
The milliseconds component, expressed as a value between 0 and 999.
The following code example demonstrates the Millisecond property. see : DateTime.Hour Property
DateTime.Minute Property
Gets the minute component of the date represented by this instance.
Value = object.Minute
The minute component, expressed as a value between 0 and 59.
The following code example demonstrates the Minute property. see : DateTime.Hour Property
DateTime.Month Property
Gets the month component of the date represented by this instance
Value = object.Month
The month component, expressed as a value between 1 and 12.
The following code example demonstrates the Minute property. see : DateTime.Hour Property
DateTime.Now Property
Gets a DateTime object that is set to the current date and time on this computer,
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expressed as the local time.
Value = object.Now
A DateTime whose value is the current local date and time.
The following example returns the Now property.
Set oNow = DotNetFactory.CreateInstance( "System.DateTime" ).Now
DateTime.Second Property
Gets the seconds component of the date represented by this instance.
Value = object.Second
The seconds, between 0 and 59.
The following code example demonstrates the Second property. see : DateTime.Hour Property
DateTime.Ticks Property
Gets the number of ticks that represent the date and time of this instance
Value = object.Ticks
The number of ticks that represent the date and time of this instance. The value is between MinValue and MaxValue.
DateTime.TimeOfDay Property
Gets the time of day for this instance.
Value = object.TimeOfDay
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A TimeSpan that represents the fraction of the day that has elapsed since midnight.
The following example uses Item to retrieve the FolderItem object representing the Windows folder and filtering the content
Option Explicit
Dim saveNow, timeSpan
Set saveNow = DotNetFactory.CreateInstance( "System.DateTime" ).Now
Print "saveNow = " & saveNow
Set timeSpan = saveNow.TimeOfDay
Print "Time since midnight -> Hours : " & _
timeSpan.Hours & ", Minutes : " & _ timeSpan.Minutes & ", Seconds : " & timeSpan.Seconds
Set saveNow = Nothing : Set timeSpan = Nothing
DateTime.Today Property
Gets the current date..
Value = object.Today
A DateTime set to today's date, with the time component set to 00:00:00.
The following example returns the Today property.
Set oToday = DotNetFactory.CreateInstance( "System.DateTime" ).Today
DateTime.UtcNow Property
Gets a DateTime object that is set to the current date and time on this computer, expressed as the Coordinated Universal Time (UTC).
Value = object.UtcNow
A DateTime whose value is the current UTC date and time.
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Starting with the .NET Framework version 2.0, the return value is a DateTime whose Kind property returns Utc.
The following example returns the UtcNow property. DateTime.DateTime( int64, DateTimeKind ) Constructor
DateTime.Year Property
Gets the year component of the date represented by this instance.
Value = object.Year
The year, between 1 and 9999
The following code example demonstrates the Year property. see : DateTime.Hour Property
DateTime Methods
Name Description
Add Adds the value of the specified TimeSpan to the value of this instance
AddDays Adds the specified number of days to the value of this instance.
AddHours Adds the specified number of hours to the value of this instance.
AddMilliseconds Adds the specified number of milliseconds to the value of this instance.
AddMinutes Adds the specified number of minutes to the value of this instance.
AddMonths Adds the specified number of months to the value of this instance.
AddSeconds Adds the specified number of seconds to the value of this instance.
AddTicks Adds the specified number of ticks to the value of this instance.
AddYears Adds the specified number of years to the value of this instance.
Compare Compares two instances of DateTime and returns an indication of their relative values.
CompareTo Overloaded. Compares this instance to a specified object or value type and returns an indication of their relative values.
DaysInMonth Returns the number of days in the specified month and year.
Equals Overloaded. Returns a value indicating whether two DateTime objects, or a DateTime instance and another object or DateTime
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are equal.
FromBinary Deserializes a 64-bit binary value and recreates an original serialized DateTime object.
FromFileTime Converts the specified Windows file time to an equivalent local time.
FromFileTimeUtc Converts the specified Windows file time to an equivalent UTC time.
GetTimeFormats Overloaded. Converts the value of this instance to all the string representations supported by the standard DateTime format specifiers.
GetHashCode Returns the hash code for this instance.
GetTypeCode Returns the TypeCode for value type DateTime.
IsDaylightSavingTime Indicates whether this instance of DateTime is within the Daylight Saving Time range for the current time zone
IsLeapYear Returns an indication whether the specified year is a leap year.
op_Addition Adds a specified time interval to a specified date and time, yielding a new date and time.
op_Equality Determines whether two specified instances of DateTime are equal.
op_GreaterThan Determines whether one specified DateTime is greater than another specified DateTime.
op_GreaterThanOrEqual Determines whether one specified DateTime is greater than or equal to another specified DateTime.
op_Inequality Determines whether two specified instances of DateTime are not equal.
op_LessThan Determines whether one specified DateTime is less than another specified DateTime.
op_LessThanOrEqual Determines whether one specified DateTime is less than or equal to another specified DateTime.
op_Subtraction Overloaded. Subtracts a specified DateTime or TimeSpan from a specified DateTime.
Parse Overloaded. Converts the specified string representation of a date and time to its DateTime equivalent.
ParseExact Overloaded. Converts the specified string representation of a date and time to its DateTime equivalent. The format of the string representation must match a specified format exactly.
SpecifyKind
Creates a new DateTime object that represents the same time as the specified DateTime, but is designated in either local time, Coordinated Universal Time (UTC), or neither, as indicated by the specified DateTimeKind value.
Subtract Overloaded. Subtracts the specified time or duration from this instance.
ToBinary Serializes the current DateTime object to a 64-bit binary value that subsequently can be used to recreate the DateTime object.
ToFileTime Converts the value of the current DateTime object to a Windows file time.
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ToFileTimeUtc Converts the value of the current DateTime object to a Windows file time.
ToLocalTime Converts the value of the current DateTime object to local time.
ToLongDateString Converts the value of the current DateTime object to its equivalent long date string representation.
ToLongTimeString Converts the value of the current DateTime object to its equivalent long time string representation.
ToShortDateString Converts the value of the current DateTime object to its equivalent short date string representation.
ToShortTimeString Converts the value of the current DateTime object to its equivalent short time string representation.
ToString Overloaded. Overridden. Converts the value of the current DateTime object to its equivalent string representation.
ToUniversalTime Converts the value of the current DateTime object to Coordinated Universal Time (UTC).
TryParse Overloaded. Converts the specified string representation of a date and time to its DateTime equivalent.
TryParseExact Overloaded. Converts the specified string representation of a date and time to its DateTime equivalent. The format of the string representation must match a specified format exactly.
DateTime.Add ( TimeSpan ) Method
Adds the value of the specified TimeSpan to the value of this instance.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
Set object = instance.Add( value )
Parameter Description
value A TimeSpan that contains the interval to add.
A DateTime whose value is the sum of the date and time represented by this instance and the time interval represented by value.
This method does not change the value of this DateTime. Instead, a new DateTime
is returned whose value is the result of this operation.
The following code example demonstrates the Add method. It calculates the day of the week that is 36 days (864 hours) from this moment.
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Option Explicit
Dim saveNow, duration, answer
Set saveNow = DotNetFactory.CreateInstance( "System.DateTime" ).Now
Set duration = DotNetFactory.CreateInstance( "System.TimeSpan", ,36, 0, 0, 0 )
Set answer = saveNow.Add( duration )
MsgBox answer.ToString( "dddd" )
Set saveNow = Nothing : Set duration = Nothing : Set answer = Nothing
DateTime.AddDays ( Double ) Method
Adds the specified number of days to the value of this instance.
This method does not change the value of this DateTime. Instead, a new DateTime
is returned whose value is the result of this operation.
The fractional part of value is the fractional part of a day. For example, 4.5 is equivalent to 4 days, 12 hours, 0 minutes, 0 seconds, 0 milliseconds, and 0 ticks.
The value parameter is rounded to the nearest millisecond.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
Set dateTime = instance.AddDays( days )
Parameter Description
days A number of whole and fractional days. The value parameter can be negative or positive
A DateTime whose value is the sum of the date and time represented by this instance and the number of days represented by days
The following code example demonstrates the AddDays method
Option Explicit
Dim saveNow
Set saveNow = DotNetFactory.CreateInstance( "System.DateTime" ).Now
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Print "Today is --> " & saveNow.ToString( "D" )
Print "Tomorrow --> " & saveNow.AddDays( 1 ).ToString( "D" )
Print "Yesterday --> " & saveNow.AddDays( -1 ).ToString( "D" )
Set saveNow = Nothing
DateTime.AddHours ( Double ) Method
Adds the specified number of hours to the value of this instance.
Set dateTime = instance.AddHours( hours )
Parameter Description
hours number of whole and fractional hours. The value parameter can be negative or positive.
A DateTime whose value is the sum of the date and time represented by this instance and the number of hours represented by hours.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
This method does not change the value of this DateTime. Instead, a new DateTime
is returned whose value is the result of this operation.
The fractional part of value is the fractional part of an hour. For example, 4.5 is equivalent to 4 hours, 30 minutes, 0 seconds, 0 milliseconds, and 0 ticks..
The value parameter is rounded to the nearest millisecond.
DateTime.AddMilliseconds ( Double ) Method
Adds the specified number of milliseconds to the value of this instance.
Set object = instance.AddMilliseconds( value )
Parameter Description
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value A number of whole and fractional milliseconds. The value parameter can be negative or positive. Note that this value is rounded to the nearest integer.
A DateTime whose value is the sum of the date and time represented by this instance and the number of milliseconds represented by value.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
This method does not change the value of this DateTime. Instead, a new
DateTime is returned whose value is the result of this operation.
The fractional part of value is the fractional part of a millisecond. For example, 4.5 is equivalent to 4 milliseconds, and 5000 ticks, where one millisecond = 10000 ticks.
The value parameter is rounded to the nearest millisecond.
DateTime.AddMinutes ( Double ) Method
Adds the specified number of minutes to the value of this instance.
Set object = instance.AddMinutes( minutes )
Parameter Description
minutes A number of whole and fractional minutes. The value parameter can be negative or positive.
A DateTime whose value is the sum of the date and time represented by this instance and the number of minutes represented by minutes.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
This method does not change the value of this DateTime. Instead, a new DateTime
is returned whose value is the result of this operation.
The fractional part of value is the fractional part of a minute. For example, 4.5 is equivalent to 4 minutes, 30 seconds, 0 milliseconds, and 0 ticks.
The value parameter is rounded to the nearest millisecond.
DateTime.AddMonths ( Integer ) Method
Adds the specified number of months to the value of this instance.
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Set object = instance.AddMonths( months )
Parameter Description
months A number of months. The months parameter can be negative or positive.
A DateTime whose value is the sum of the date and time represented by this instance and months.
ArgumentOutOfRangeException
months is less than -120,000 or greater than 120,000.
The resulting DateTime is less than MinValue or greater than MaxValue.
This method does not change the value of this DateTime. Instead, a new
DateTime is returned whose value is the result of this operation.
The AddMonths method calculates the resulting month and year, taking into account leap years and the number of days in a month, then adjusts the day part of the resulting DateTime object. If the resulting day is not a valid day in the resulting month, the last valid day of the resulting month is used. For example, March 31st + 1 month = April 30th. The time-of-day part of the resulting DateTime object remains the same as this instance.
DateTime.AddSeconds ( Double ) Method
Adds the specified number of seconds to the value of this instance.
Set object = instance.AddSeconds( seconds )
Parameter Description
seconds A number of whole and fractional seconds. The value parameter can be negative or positive.
A DateTime whose value is the sum of the date and time represented by this instance and the number of seconds represented by seconds.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
This method does not change the value of this DateTime. Instead, a new DateTime
is returned whose value is the result of this operation.
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A The fractional part of value is the fractional part of a second. For example, 4.5 is equivalent to 4 seconds, 500 milliseconds, and 0 ticks.
The value parameter is rounded to the nearest millisecond.
DateTime.AddTicks ( Long ) Method
Adds the specified number of ticks to the value of this instance.
Set object = instance.AddTicks( ticks )
Parameter Description
ticks A number of 100-nanosecond ticks. The value parameter can be positive or negative.
A DateTime whose value is the sum of the date and time represented by this
instance and the time represented by ticks.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
This method does not change the value of this DateTime. Instead, a new DateTime
is returned whose value is the result of this operation.
DateTime.AddYears ( Integer ) Method
Adds the specified number of years to the value of this instance.
Set object = instance.AddYears( years )
Parameter Description
years A number of years. The value parameter can be negative or positive.
A DateTime whose value is the sum of the date and time represented by this instance and the number of years represented by years.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
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This method does not change the value of this DateTime. Instead, a new DateTime is returned whose value is the result of this operation.
The AddYears method calculates the resulting year taking into account leap years. The month and time-of-day part of the resulting DateTime object remains the same as this instance.
DateTime.Compare ( DateTime, DateTime ) Method
Compares two instances of DateTime and returns an indication of their relative values.
returnValue = instance.Compare( dt1, dt2 )
Parameter Description
dt1 The first DateTime.
dt2 The second DateTime.
A signed number indicating the relative values of dt1 and dt2
Less than zero - dt1 is less than dt2.
Zero - dt1 equals dt2
Greater than zero - dt1 is greater than dt2.
Before comparing DateTime objects, insure that the objects represent times in the
same time zone.
The following code example demonstrates Compare.
Option Explicit
Dim dt1, dt2, DateTime
Set dt1 = DotNetFactory.CreateInstance( "System.DateTime", ,100 )
Set dt2 = DotNetFactory.CreateInstance( "System.DateTime", ,300 )
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
If DateTime.Compare( dt1, dt2 ) > 0 Then
Print "dt1 > dt2"
End If
If DateTime.Compare( dt1, dt2 ) = 0 Then
Print "dt1 = dt2"
End If
If DateTime.Compare( dt1, dt2 ) < 0 Then
Print "dt1 < dt2"
End If
DateTime.CompareTo ( DateTime ) Method
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Compares this instance to a specified DateTime object and returns an indication of their relative values.
instance.CompareTo( value )
Parameter Description
value A DateTime object to compare.
A signed number indicating the relative values of this instance and the value parameter.
Less than zero - This instance is less than value
Zero - This instance is equal to value.
Greater than zero - This instance is greater than value.
This method implements the System.IComparable interface and performs slightly
better than the DateTime.CompareTo method because it does not have to convert the value parameter to an object.
Before comparing DateTime objects, insure that the objects represent times in the same time zone.
The following code example demonstrates the CompareTo method.
Option Explicit
Dim DateTime, thDay
Dim compareValue
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set thDay = DotNetFactory.CreateInstance( _ System.DateTime", , DateTime.Today.Year, 7, 28 )
compareValue = Cint( thDay.CompareTo( DateTime.Today ) )
If compareValue < 0 Then
Print thDay.ToString( "d" ) & " is in the past."
ElseIf compareValue = 0 Then
Print thDay.ToString( "d" ) & " is today!"
Else
Print thDay.ToString( "d" ) & " has not come yet."
End If
DateTime.DaysInMonth ( Integer, Integer ) Method
Returns the number of days in the specified month and year.
This method implements the System.IComparable interface and performs slightly
better than the DateTime.CompareTo method because it does not have to convert the value parameter to an object.
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Before comparing DateTime objects, insure that the objects represent times in the same time zone.
returnValue = instance.DaysInMonth( year, month )
Parameter Description
year The year.
month The month (a number ranging from 1 to 12).
The number of days in month for the specified year. For example, if month equals 2
for February, the return value is 28 or 29 depending upon whether year is a leap year.
ArgumentOutOfRangeException
month is less than 1 or greater than 12.
year is less than 1 or greater than 9999.
The following code example demonstrates the DaysInMonth method.
Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim DateTime, Info
Dim arrInfo, i, nMonth
Private Sub PrintData( ByVal info, ByRef DateTime, ByVal monthIndex )
Const FMT = "{0} - {1} --> {2} has {3} Days."
Dim monthStr, engName, nativeName, daysInMon
Dim sb
monthStr= info.DateTimeFormat.MonthNames.GetValue( monthIndex - 1 )
engName = info.EnglishName
nativeName = info.NativeName
daysInMon= DateTime.DaysInMonth( DateTime.Today.Year, monthIndex )
Set sb = DotNetFactory.CreateInstance( "System.Text.StringBuilder" )
sb.AppendFormat FMT, engName, nativeName, monthStr, daysInMon
Print sb.ToString
Set sb = Nothing
End Sub
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
arrInfo = Array( "es-AR", "hi-IN", "de-DE", "fi-FI" )
For i = LBound( arrInfo ) To UBound( arrInfo )
Set info = DotNetFactory.CreateInstance( CULTURE_INFO, "System", arrInfo( i ) )
For nMonth = 1 To 12
Call PrintData( info, DateTime, nMonth )
Next
Next
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Set Info = Nothing : Set DateTime = Nothing
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DateTime.Equals ( DateTime ) Method
Returns a value indicating whether this instance is equal to the specified DateTime instance.
returnValue = instance.Equals( value )
Parameter Description
value A DateTime instance to compare to this instance.
true if the value parameter equals the value of this instance; otherwise, false.
This method implements the System.IEquatable interface, and performs slightly
better than the Equals method because the value parameter does not have to be converted to an object.
The following code example demonstrates the Equals method.
Option Explicit
Dim one, two, three
Dim result
Set one = DotNetFactory.CreateInstance( "System.DateTime" ).UtcNow
Set two = DotNetFactory.CreateInstance( "System.DateTime" ).Now
Set three = one
result = one.Equals(two)
Print "The result of comparing DateTime object one and two is: " & result
result = one.Equals(three)
Print "The result of comparing DateTime object one and three is: " & result
Set one = Nothing : Set two = Nothing : Set three = Nothing
DateTime.Equals ( DateTime, DateTime ) Method
Returns a value indicating whether two instances of DateTime are equal.
ReturnValue = instance.Equals( t1, t2 )
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Parameter Description
t1 The first DateTime instance.
t2 The second DateTime instance.
true if the two DateTime values are equal; otherwise, false.
This method implements the System.IEquatable interface, and performs slightly better than the Equals method because the value parameter does not have to be converted to an object.
The following code example demonstrates the Equals method.
Option Explicit
Dim today1, today2, tomorrow, DateTime
Dim todayEqualsToday, todayEqualsTomorrow
Set DateTime = DotNetFactory.CreateInstance("System.DateTime")
Set today1 = DotNetFactory.CreateInstance("System.DateTime",, DateTime.Today.Ticks )
Set today2 = DotNetFactory.CreateInstance("System.DateTime",, DateTime.Today.Ticks )
Set tomorrow = DotNetFactory.CreateInstance( "System.DateTime",, _ DateTime.Today.AddDays(1).Ticks _ )
' ** todayEqualsToday gets true.
todayEqualsToday = DateTime.Equals( today1, today2 )
' ** todayEqualsTomorrow gets false.
todayEqualsTomorrow = DateTime.Equals(today1, tomorrow)
Set today1 = Nothing : Set today2 = Nothing : Set tomorrow = Nothing
Set DateTime = Nothing
DateTime.FromBinary ( Long ) Method
Deserializes a 64-bit binary value and recreates an original serialized DateTime object
instance.FromBinary( dateData )
Parameter Description
dateData A 64-bit signed integer that encodes the Kind property in a 2-bit field and the Ticks property in a 62-bit field
A DateTime object that is equivalent to the DateTime object that was serialized by
the ToBinary method
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ArgumentException - dateData is less than MinValue or greater than MaxValue.
Use the ToBinary method to convert the value of the current DateTime object to a
binary value. Subsequently, use the binary value and the FromBinary method to recreate the original DateTime object.
A local time, which is a Coordinated Universal Time adjusted to the local time zone, is represented by a DateTime structure whose Kind property has the value Local. If a local DateTime object is serialized in one time zone by the ToBinary method and deserialized in a different time zone by the FromBinary method, the local time represented by the resulting DateTime object is automatically adjusted to the second time zone.
For example, consider a DateTime object that represents a local time of 3 P.M. An application executing in a western time zone uses the ToBinary method to convert that DateTime object to a binary value, then another application executing in a time zone three hours east of the original one uses the FromBinary method to convert the binary value to a new DateTime object. The value of the new DateTime object is 6 P.M., which represents the same point in time as the original 3 P.M. value, but is adjusted to local time in the eastern time zone.
DateTime.FromFileTime ( Long ) Method
Converts the specified Windows file time to an equivalent local time.
Set object = instance.FromFileTime( fileTime )
Parameter Description
fileTime A Windows file time expressed in ticks.
A DateTime object that represents a local time equivalent to the date and time
represented by the fileTime parameter.
ArgumentOutOfRangeException - fileTime is less than 0 or represents a time greater
than MaxValue.
A Windows file time is a 64-bit value that represents the number of 100-nanosecond
intervals that have elapsed since 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC). Windows uses a file time to record when an application creates, accesses, or writes to a file.
The fileTime parameter specifies a file time expressed in 100-nanosecond ticks.
Starting with the .NET Framework version 2.0, the return value is a DateTime whose Kind property is Local.
The following code example demonstrates the FromFileTime method.
Option Explicit
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Dim dteNow, DateTime
Dim fCreationTime, fAge, LongNum
Set LongNum = DotNetFactory.CreateInstance( "System.Int64" )
Set LongNum = LongNum.Parse( "126879894987978697" )
Set dteNow = DotNetFactory.CreateInstance( "System.DateTime" ).Now
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set fCreationTime = DateTime.FromFileTime( LongNum )
Set fAge = dteNow.Subtract( fCreationTime )
Print fAge.Days & _
" Days, " & fAge.Hours & " Hours, and " & fAge.Minutes & " Minutes."
Print "TotalDays --> " & fAge.TotalDays
Set fAge = Nothing : Set fCreationTime = Nothing : Set dteNow = Nothing
Set LongNum = Nothing
DateTime.FromFileTimeUtc ( Long ) Method
Converts the specified Windows file time to an equivalent UTC time.
Set object = instance.FromFileTimeUtc( fileTime )
Parameter Description
fileTime A Windows file time expressed in ticks.
A DateTime object that represents a UTC time equivalent to the date and time
represented by the fileTime parameter
ArgumentOutOfRangeException - fileTime is less than 0 or represents a time greater
than MaxValue.
A Windows file time is a 64-bit value that represents the number of 100-nanosecond
intervals that have elapsed since 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC). Windows uses a file time to record when an application creates, accesses, or writes to a file.
The fileTime parameter specifies a file time expressed in 100-nanosecond ticks.
Starting with the .NET Framework version 2.0, the return value is a DateTime whose Kind property is Utc.
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DateTime.GetTimeFormats Method
Name Description
GetTimeFormats() Converts the value of this instance to all the string representations supported by the standard DateTime format specifiers.
DateTime.GetDateTimeFormats (Char)
Converts the value of this instance to all the string representations supported by the specified standard DateTime format specifier.
DateTime.GetDateTimeFormats (IFormatProvider)
Converts the value of this instance to all the string representations supported by the standard DateTime format specifiers and the specified culture-specific formatting information.
DateTime.GetDateTimeFormats (Char, IFormatProvider)
Converts the value of this instance to all the string representations supported by the specified standard DateTime format specifier and culture-specific formatting information.
DateTime.GetTimeFormats () Method
Converts the value of this instance to all the string representations supported by the standard DateTime format specifiers.
Set objectArray = instance.GetTimeFormats()
A string array where each element is the representation of the value of this instance
formatted with one of the standard DateTime formatting specifiers.
Each element of the return value is formatted using information from the current
culture. For more information about culture-specific formatting information for the current culture, see CultureInfo.CurrentCulture.
For For more information about the standard formatting specifiers http://msdn2.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx
The following code example demonstrates the GetDateTimeFormats method.
Option Explicit
Dim july28Formats, july28
Dim nFormat
Set july28 = DotNetFactory.CreateInstance( _
"System.DateTime",, 1979, 7, 28, 5, 23, 15, 16 _
)
Set july28Formats = july28.GetDateTimeFormats()
' ** Print out july28 in all DateTime formats using the default culture.
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For nFormat = 0 To july28Formats.Length - 1
Print july28Formats.GetValue( CLng( nFormat ) )
Next
Set july28Formats = Nothing: Set july28 = Nothing
DateTime.GetTimeFormats ( Char ) Method
Converts the value of this instance to all the string representations supported by the specified standard DateTime format specifier.
Set objectArray = instance.GetTimeFormats( format )
Parameter Description
format A Standard DateTime format string or a Custom DateTime Format String
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A string array where each element is the representation of the value of this instance
formatted with the format standard DateTime formatting specifier.
Each element of the return value is formatted using information from the current
culture. For more information about culture-specific formatting information for the current culture, see CultureInfo.CurrentCulture.
For For more information about the standard formatting specifiers http://msdn2.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx
The following code example demonstrates the GetDateTimeFormats method.
Option Explicit
Dim july28, sysChar
Dim nFormat
Set july28 = DotNetFactory.CreateInstance( _
"System.DateTime",, 1979, 7, 28, 5, 23, 15, 16 _
)
Set sysChar = DotNetFactory.CreateInstance( "System.Char" ).Parse( "R" )
' ** Get the RFC1123 date formats
Set July28Formats = july28.GetDateTimeFormats( sysChar )
' ** Print out july28 in various RFC1123 formats
For nFormat = 0 To July28Formats.Length - 1
Print July28Formats.GetValue( CLng( nFormat ) )
Next
Set July28Formats = Nothing : Set july28 = Nothing : Set sysChar = Nothing
DateTime.GetTimeFormats ( IFormatProvider ) Method
Converts the value of this instance to all the string representations supported by the standard DateTime format specifiers and the specified culture-specific formatting information.
Set objectArray = instance.GetTimeFormats( provider )
Parameter Description
provider An IFormatProvider that supplies culture-specific formatting information about this instance.
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A string array where each element is the representation of the value of this instance
formatted with one of the standard DateTime formatting specifiers.
Each element of the return value is formatted using culture-specific information
supplied by provider.
For For more information about the standard formatting specifiers http://msdn2.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx
The following code example demonstrates the GetDateTimeFormats method.
Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim arabicJuly28Formats, july28, culture
Dim nFormat
Set july28 = DotNetFactory.CreateInstance( _
"System.DateTime",, 1979, 7, 28, 5, 23, 15, 16 _
)
Set culture = DotNetFactory.CreateInstance( CULTURE_INFO, "System", "ar-EG", True )
' ** Get the short date formats using the "ar-EG" culture.
Set arabicJuly28Formats = july28.GetDateTimeFormats( culture )
Print "Starting DateTiume Formats for --> " & _
culture.EnglishName & ", " & culture.NativeName
For nFormat = 0 To arabicJuly28Formats.Length – 1 Step 2
Print arabicJuly28Formats.GetValue( CLng( nFormat ) )
Next
Set arabicJuly28Formats = Nothing : Set july28 = Nothing : Set culture = Nothing
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DateTime.GetTimeFormats ( Char, IFormatProvider ) Method
Converts the value of this instance to all the string representations supported by the standard DateTime format specifiers and the specified culture-specific formatting information.
Set objectArray = instance.GetTimeFormats( format, provider )
Parameter Description
format A Standard DateTime format string or a Custom DateTime Format String
provider An IFormatProvider that supplies culture-specific formatting information about this instance.
A string array where each element is the representation of the value of this instance
formatted with one of the standard DateTime formatting specifiers.
Each element of the return value is formatted using culture-specific information
supplied by provider.
For For more information about the standard formatting specifiers
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http://msdn2.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx
The following code example demonstrates the GetDateTimeFormats method.
Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim frenchJuly28Formats, july28, culture, sysChar
Dim nFormat
Set july28 = DotNetFactory.CreateInstance( _
"System.DateTime",, 1979, 7, 28, 5, 23, 15, 16 _
)
Set sysChar = DotNetFactory.CreateInstance( "System.Char" ).Parse( "f" )
Set culture = DotNetFactory.CreateInstance( CULTURE_INFO, "System", "fr-FR", True )
' ** Get the short date formats using the "fr-FR" culture.
Set frenchJuly28Formats = july28.GetDateTimeFormats( sysChar, culture )
' ** Print out july28 in various formats using "fr-FR" culture.
Print "Starting fr-FR formats..."
For nFormat = 0 To frenchJuly28Formats.Length - 1
Print frenchJuly28Formats.GetValue( CLng( nFormat ) )
Next
Set frenchJuly28Formats = Nothing : Set july28 = Nothing
DateTime.GetHashCode () Method
Returns the hash code for this instance.
returnValue = instance.GetHashCode()
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A 32-bit signed integer hash code.
The following code example demonstrates the GetHashCode method.
Option Explicit
Dim SystemTime
Set SystemTime = DotNetFactory.CreateInstance( "System.DateTime" ).Today
Print "GetTypeCode --> " & SystemTime.GetTypeCode
Print "GetType --> " & SystemTime.GetType
Print "GetHashCode.GetType --> " & SystemTime.GetHashCode.GetType
Print "GetHashCode --> " & SystemTime.GetHashCode
Set SystemTime = Nothing
DateTime.GetTypeCode () Method
Returns the TypeCode for value type DateTime.
instance.GetTypeCode()
The enumerated constant, TypeCode.DateTime.
The following code example demonstrates the GetTypeCode method. DateTime.GetHashCode() Method
DateTime.IsDaylightSavingTime () Method
Indicates whether this instance of DateTime is within the Daylight Saving Time range for the current time zone.
instance.IsDaylightSavingTime ()
true if Kind is Local or Unspecified and the value of this instance of DateTime is
within the Daylight Saving Time range for the current time zone. false if Kind is Utc.
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DateTime.IsLeapYear ( Integer ) Method
Returns an indication whether the specified year is a leap year.
instance.IsLeapYear( year )
Parameter Description
year A 4-digit year.
true if year is a leap year; otherwise, false.
ArgumentOutOfRangeException - year is less than 1 or greater than 9999.
year is specified as a 4-digit base 10 number; for example, 1996.
DateTime.op_Addition ( DateTime, TimeSpan ) Method
Adds a specified time interval to a specified date and time, yielding a new date and time.
instance.op_Addition( d, t )
Parameter Description
d A DateTime object
t A TimeSpan object
A DateTime that is the sum of the values of d and t.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
The following code example demonstrates the addition operator.
Option Explicit
Dim dTime, tSpan, result, DateTime
Set dTime = DotNetFactory.CreateInstance( "System.DateTime",,1980, 8, 5 )
' ** tSpan is 17 days, 4 hours, 2 minutes and 1 second.
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Set tSpan = DotNetFactory.CreateInstance( "System.TimeSpan",,17, 4, 2, 1 )
' ** Result gets 8/22/1980 4:02:01 AM.
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set result = DateTime.op_Addition( dTime, tSpan )
Msgbox result.ToString( "G" )
Set result = Nothing : Set tSpan = Nothing : Set dTime = Nothing
DateTime.op_Equality ( DateTime, DateTime ) Method
Determines whether two specified instances of DateTime are equal.
instance.op_Equality( d1, d2 )
Parameter Description
d1 A DateTime object
d2 A DateTime object
true if d1 and d2 represent the same date and time; otherwise, false.
The following code example demonstrates the equality operator.
Option Explicit
Dim april19, otherDate
Dim areEqual
Set april19 = DotNetFactory.CreateInstance( "System.DateTime",,2001, 4, 19 )
Set otherDate = DotNetFactory.CreateInstance( "System.DateTime",,1991, 6, 5 )
' ** areEqual gets false.
areEqual = DotNetFactory.CreateInstance( _
"System.DateTime").op_Equality( april19, otherDate )
Set otherDate = DotNetFactory.CreateInstance( "System.DateTime",,2001, 4, 19)
' ** areEqual gets true.
areEqual = DotNetFactory.CreateInstance( _
"System.DateTime").op_Equality( april19, otherDate )
Set otherDate = Nothing : Set april19 = Nothing
DateTime.op_GreaterThan ( DateTime, DateTime ) Method
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Determines whether one specified DateTime is greater than another specified DateTime.
instance.op_GreaterThan( t1, t2 )
Parameter Description
t1 A DateTime object
t2 A DateTime object
true if t1 is greater than t2; otherwise, false.
DateTime.op_GreaterThanOrEqual ( DateTime, DateTime ) Method
Determines whether one specified DateTime is greater than or equal to another specified
instance.op_GreaterThanOrEqual( t1, t2 )
Parameter Description
t1 A DateTime object
t2 A DateTime object
true if t1 is greater than or equal to t2; otherwise, false.
DateTime.op_Inequality ( DateTime, DateTime ) Method
Determines whether two specified instances of DateTime are not equal.
instance.op_Equality( d1, d2 )
Parameter Description
d1 A DateTime object
d2 A DateTime object
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true if d1 and d2 do not represent the same date and time; otherwise, false.
DateTime.op_LessThan ( DateTime, DateTime ) Method
Determines whether one specified DateTime is less than another specified DateTime
instance.op_LessThan( t1, t2 )
Parameter Description
t1 A DateTime object
t2 A DateTime object
true if t1 is less than t2; otherwise, false.
DateTime.op_LessThanOrEqual ( DateTime, DateTime ) Method
Determines whether one specified DateTime is less than or equal to another specified DateTime
instance.op_LessThanOrEqual( t1, t2 )
Parameter Description
t1 A DateTime object
t2 A DateTime object
true if t1 is less than or equal to t2; otherwise, false.
DateTime.op_Subtraction Method
Name Description
DateTime.op_Subtraction (DateTime, DateTime)
Subtracts a specified date and time from another specified date and time, yielding a time interval.
DateTime.op_Subtraction (DateTime, TimeSpan)
Subtracts a specified time interval from a specified date and time, yielding a new date and time.
DateTime.op_Subtraction ( DateTime, DateTime ) Method
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Subtracts a specified date and time from another specified date and time, yielding a time interval.
instance.op_Subtract( d1, d2 )
Parameter Description
d1 A DateTime (the minuend).
d2 A DateTime (the subtrahend).
A TimeSpan that is the time interval between d1 and d2; that is, d1 minus d2.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
The following code example demonstrates the equality operator.
Option Explicit
Dim date1, date2, date3, date4, date5
Dim diff1, diff2, SystemDateTime
Set SystemDateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set date1 = DotNetFactory.CreateInstance( "System.DateTime",,1996, 6, 3, 22, 15, 0 )
Print "date1 --> " & date1.ToString( "G" )
Set date2 = DotNetFactory.CreateInstance( "System.DateTime",,1996, 12, 6, 13, 2, 0 )
Print "date2 --> " & date2.ToString( "G" )
Set date3 = DotNetFactory.CreateInstance( "System.DateTime",,1996, 10, 12,8, 42, 0 )
Print "date3 --> " & date3.ToString( "G" )
' ** diff1 gets 185 days, 14 hours, and 47 minutes.
Set diff1 = date2.Subtract( date1 )
Print "diff1 --> " & diff1.ToString()
' ** date4 gets 4/9/1996 5:55:00 PM.
Set date4 = date3.Subtract( diff1 )
Print "date4 --> " & date4.ToString()
' ** diff2 gets 55 days 4 hours and 20 minutes.
Set diff2 = SystemDateTime.op_Subtraction( date2, date3 )
Print "diff2 --> " & diff2.ToString()
' ** date5 gets 4/9/1996 5:55:00 PM.
Set date5 = SystemDateTime.op_Subtraction( date1, diff2 )
Print "date5 --> " & date5.ToString()
Set date1 = Nothing : Set date2 = Nothing : Set date3 = Nothing
Set date4 = Nothing : Set date5 = Nothing : Set diff1 = Nothing
Set SystemDateTime = Nothing : Set diff2 = NothingSet
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DateTime.op_Subtraction ( DateTime, TimeSpan ) Method
Subtracts a specified time interval from a specified date and time, yielding a new date and time.
instance.op_Subtract( d, t )
Parameter Description
d A DateTime.
t A TimeSpan.
A DateTime whose value is the value of d minus the value of t.
This method subtracts the ticks value of t from the ticks value of d.
ArgumentOutOfRangeException - The resulting DateTime is less than . MinValue or
greater than MaxValue.
The following code example demonstrates the equality operator. See DateTime.op_Subtraction( DateTime, DateTime ) Method
DateTime.Parse Method
Name Description
DateTime.Parse (String) Converts the specified string representation of a date and time to its DateTime equivalent.
DateTime.Parse (String, IFormatProvider)
Converts the specified string representation of a date and time to its DateTime equivalent using the specified culture-specific format information.
DateTime.Parse (String, Converts the specified string representation of a date
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IFormatProvider, DateTimeStyles) and time to its DateTime equivalent using the specified culture-specific format information and formatting style
DateTime.Parse ( String ) Method
Converts the specified string representation of a date and time to its DateTime equivalent.
instance.Parse( s )
Parameter Description
s string containing a date and time to convert.
A DateTime equivalent to the date and time contained in s.
ArgumentNullException - s is a null reference (Nothing in Visual Basic).
FormatException - s does not contain a valid string representation of a date and time.
The string s is parsed using formatting information in the current
DateTimeFormatInfo object, which is supplied implicitly by the current thread culture.
This method attempts to parse s completely and avoid throwing FormatException. It ignores unrecognized data if possible and fills in missing month, day, and year information with the current time. If s contains only a date and no time, this method assumes 12:00 midnight. Any leading, inner, or trailing white space character in s is ignored. The date and time can be bracketed with a pair of leading and trailing NUMBER SIGN characters ('#', U+0023), and can be trailed with one or more NULL characters (U+0000).
The s parameter must contain the representation of a date and time in one of the formats described in the DateTimeFormatInfo topic
The following code example demonstrates the Parse method.
Option Explicit
Dim myDateTimeValue, myDateTime
myDateTimeValue = "2/16/1992 12:15:12"
Set myDateTime = DotNetFactory.CreateInstance( _
"System.DateTime" ).Parse(myDateTimeValue)
Msgbox "myDateTime = " & myDateTime.ToString()
Set myDateTime = Nothing
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DateTime.Parse ( String, IFormatProvider ) Method
Converts the specified string representation of a date and time to its DateTime equivalent using the specified culture-specific format information.
instance.Parse( s, provider )
Parameter Description
s string containing a date and time to convert.
provider An IFormatProvider that supplies culture-specific format information about s.
A DateTime equivalent to the date and time contained in s as specified by provider.
ArgumentNullException - s is a null reference (Nothing in Visual Basic).
FormatException - s does not contain a valid string representation of a date and time.
The string s is parsed using formatting information in the DateTimeFormatInfo
object that is supplied either explicitly or implicitly by the provider parameter.
This method attempts to parse s completely and avoid throwing FormatException. It ignores unrecognized data if possible and fills in missing month, day, and year information with the current time. If s contains only a date and no time, this method assumes 12:00 midnight. Any leading, inner, or trailing white space character in s is ignored. The date and time can be bracketed with a pair of leading and trailing NUMBER SIGN characters ('#', U+0023), and can be trailed with one or more NULL characters (U+0000).
The s parameter must contain the representation of a date and time in one of the formats described in the DateTimeFormatInfo topic
The provider parameter supplies culture-specific date and time formatting information. For example, the names of the days of the week in a particular language, or the preferred presentation order of the month, day, and year. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
If you parse a date and time string generated for a custom culture, use the ParseExact method instead of the Parse method to improve the probability that the parse operation will succeed. A custom culture date and time string can be complicated, and therefore difficult to parse. The Parse method attempts to parse a string with several implicit parse patterns, all of which might fail. The ParseExact
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method, in contrast, requires you to explicitly designate one or more exact parse patterns that are likely to succeed.
The following code example demonstrates the Parse method.
Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim myDateTimeFrenchValue, myDateTimeFrench, culture
myDateTimeFrenchValue = "16/02/1992 12:15:12"
Set culture = DotNetFactory.CreateInstance( CULTURE_INFO, "System", "fr-FR", True )
Set myDateTimeFrench = DotNetFactory.CreateInstance( _
"System.DateTime" ).Parse( myDateTimeFrenchValue, culture )
MsgBox myDateTimeFrench.ToString()
Set myDateTimeFrench = Nothing : Set culture = Nothing
DateTime.Parse ( String, IFormatProvider, DateTimeStyles ) Method
Converts the specified string representation of a date and time to its DateTime equivalent using the specified culture-specific format information and formatting style.
instance.Parse( s, provider, styles )
Parameter Description
s string containing a date and time to convert.
provider An IFormatProvider that supplies culture-specific format information about s.
styles A bitwise combination of DateTimeStyles values that indicates the permitted format of s. A typical value to specify is None.
A DateTimeequivalent to the date and time contained in s as specified by provider
and styles.
ArgumentNullException - s is a null reference (Nothing in Visual Basic).
FormatException - s does not contain a valid string representation of a date and time.
ArgumentException - styles contains an invalid combination of DateTimeStyles
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values. For example, both AssumeLocal and AssumeUniversal.
The string s is parsed using formatting information in the DateTimeFormatInfo
object that is supplied either explicitly or implicitly by the provider parameter.
This method attempts to parse s completely and avoid throwing FormatException. It ignores unrecognized data if possible and fills in missing month, day, and year information with the current time. If s contains only a date and no time, this method assumes 12:00 midnight. Any leading, inner, or trailing white space character in s is ignored. The date and time can be bracketed with a pair of leading and trailing NUMBER SIGN characters ('#', U+0023), and can be trailed with one or more NULL characters (U+0000).
The s parameter must contain the representation of a date and time in one of the formats described in the DateTimeFormatInfo topic
The provider parameter supplies culture-specific date and time formatting information. For example, the names of the days of the week in a particular language, or the preferred presentation order of the month, day, and year. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
If you parse a date and time string generated for a custom culture, use the ParseExact method instead of the Parse method to improve the probability that the parse operation will succeed. A custom culture date and time string can be complicated, and therefore difficult to parse. The Parse method attempts to parse a string with several implicit parse patterns, all of which might fail. The ParseExact method, in contrast, requires you to explicitly designate one or more exact parse patterns that are likely to succeed.
The following code example demonstrates the Parse method.
Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim myDateTimeFrenchValue, myDateTimeFrench, culture, DateTimeStyles
myDateTimeFrenchValue = "16/02/1992 12:15:12"
Set culture = DotNetFactory.CreateInstance( CULTURE_INFO, "System", "fr-FR", True )
Set DateTimeStyles = DotNetFactory.CreateInstance(
"System.Globalization.DateTimeStyles" )
Set myDateTimeFrench = DotNetFactory.CreateInstance( "System.DateTime" ).Parse( _
myDateTimeFrenchValue, culture, DateTimeStyles. NoCurrentDateDefault ) MsgBox myDateTimeFrench.ToString()
Set myDateTimeFrench = Nothing : Set culture = Nothing
Set DateTimeStyles = Nothing
DateTime.ParseExact Method
Name Description
DateTime.ParseExact (String, Converts the specified string representation of a date
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String, IFormatProvider) and time to its DateTime equivalent using the specified format and culture-specific format information. The format of the string representation must match the specified format exactly.
DateTime.ParseExact (String, String, IFormatProvider, DateTimeStyles)
Converts the specified string representation of a date and time to its DateTime equivalent using the specified format, culture-specific format information, and style. The format of the string representation must match the specified format exactly.
DateTime.ParseExact (String, String(), IFormatProvider, DateTimeStyles)
Converts the specified string representation of a date and time to its DateTime equivalent using the specified array of formats, culture-specific format information, and style. The format of the string representation must match at least one of the specified formats exactly.
DateTime.ParseExact ( String, String, IFormatProvider ) Method
Converts the specified string representation of a date and time to its DateTime equivalent using the specified format and culture-specific format information. The format of the string representation must match the specified format exactly.
instance.ParseExact( s, format, provider )
Parameter Description
s A string containing a date and time to convert.
format The expected format of s.
provider An IFormatProvider that supplies culture-specific format information about s.
A DateTime equivalent to the date and time contained in s as specified by format
and provider.
ArgumentNullException - s or format is a null reference (Nothing in Visual Basic).
FormatException.
s or format is an empty string.
s does not contain a date and time that corresponds to the pattern specified in format.
The s parameter contains the date and time to parse. If the s parameter contains
only a time and no date, the current date is used. If the s parameter contains only a date and no time, midnight (00:00:00) is used. The s parameter cannot contain leading, inner, or trailing white space characters.
The format parameter contains a pattern that corresponds to the expected format of
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the s parameter. The pattern in the format parameter consists of one or more custom format specifiers from the Custom DateTime Format Strings table, or a single standard format specifier, which identifies a predefined pattern, from the Standard DateTime Format Strings table.
If you do not use date or time separators in a custom format pattern, use the invariant culture for the provider parameter and the widest form of each custom format specifier. For example, if you want to specify hours in the pattern, specify the wider form, "HH", instead of the narrower form, "H".
The provider parameter supplies culture-specific date and time formatting information, such as the names of the days of the week in a particular language, or the preferred presentation order of the month, day, and year. The format parameter is typically a culture represented by a CultureInfo object. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
The following code example demonstrates the ParseExact method
Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim dateToParse, culture, DateTime
myDateTimeFrenchValue = "11/02/2007 15:30:44"
Set culture = DotNetFactory.CreateInstance( CULTURE_INFO, "System", "en-GB", True )
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" ).ParseExact( _
dateToParse, "G", culture )
MsgBox DateTime.ToString()
Set DateTime = Nothing : Set culture = Nothing
DateTime.ParseExact ( String, String, IFormatProvider, DateTimeStyles ) Method
Converts the specified string representation of a date and time to its DateTime equivalent using the specified format, culture-specific format information, and style. The format of the string representation must match the specified format exactly
instance.ParseExact( s, format, provider, styles )
Parameter Description
s A string containing a date and time to convert.
format The expected format of s.
provider An IFormatProvider that supplies culture-specific format information
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about s.
styles A bitwise combination of DateTimeStyles values that indicates the permitted format of s. A typical value to specify is None.
A DateTime equivalent to the date and time contained in s as specified by format,
provider, and style.
ArgumentNullException - s or format is a null reference (Nothing in Visual Basic).
FormatException.
s or format is an empty string.
s does not contain a date and time that corresponds to the pattern specified in format.
ArgumentException - style contains an invalid combination of DateTimeStyles values. For example, both AssumeLocal and AssumeUniversal.
The s parameter contains the date and time to parse. If the s parameter contains
only a time and no date, the current date is used. If the s parameter contains only a date and no time, midnight (00:00:00) is used. The s parameter cannot contain leading, inner, or trailing white space characters.
The format parameter contains a pattern that corresponds to the expected format of the s parameter. The pattern in the format parameter consists of one or more custom format specifiers from the Custom DateTime Format Strings table, or a single standard format specifier, which identifies a predefined pattern, from the Standard DateTime Format Strings table.
If you do not use date or time separators in a custom format pattern, use the invariant culture for the provider parameter and the widest form of each custom format specifier. For example, if you want to specify hours in the pattern, specify the wider form, "HH", instead of the narrower form, "H".
The provider parameter supplies culture-specific date and time formatting information, such as the names of the days of the week in a particular language, or the preferred presentation order of the month, day, and year. The format parameter is typically a culture represented by a CultureInfo object. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
DateTime.ParseExact ( String, String[], IFormatProvider, DateTimeStyles ) Method
Converts the specified string representation of a date and time to its DateTime equivalent using the specified format, culture-specific format information, and style. The format of the string representation must match the specified format exactly
instance.ParseExact( s, formats, provider, styles )
Parameter Description
s A string containing a date and time to convert.
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formats An array of expected formats of s.
provider An IFormatProvider that supplies culture-specific format information about s.
styles A bitwise combination of DateTimeStyles values that indicates the permitted format of s. A typical value to specify is None.
A DateTime equivalent to the date and time contained in s as specified by format,
provider, and style.
ArgumentNullException - s or format is a null reference (Nothing in Visual Basic).
FormatException.
s is an empty string.
an element of formats is an empty string.
s does not contain a date and time that corresponds to the pattern specified in formats.
ArgumentException style contains an invalid combination of DateTimeStyles values. For example, both AssumeLocal and AssumeUniversal.
The s parameter contains the date and time to parse. If the s parameter contains
only a time and no date, the current date is used. If the s parameter contains only a date and no time, midnight (00:00:00) is used. The s parameter cannot contain leading, inner, or trailing white space characters.
The format parameter contains a pattern that corresponds to the expected format of the s parameter. The pattern in the format parameter consists of one or more custom format specifiers from the Custom DateTime Format Strings table, or a single standard format specifier, which identifies a predefined pattern, from the Standard DateTime Format Strings table.
If you do not use date or time separators in a custom format pattern, use the invariant culture for the provider parameter and the widest form of each custom format specifier. For example, if you want to specify hours in the pattern, specify the wider form, "HH", instead of the narrower form, "H".
The provider parameter supplies culture-specific date and time formatting information, such as the names of the days of the week in a particular language, or the preferred presentation order of the month, day, and year. The format parameter is typically a culture represented by a CultureInfo object. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
The following code example demonstrates the ParseExact method
Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim myDateTimeFrenchValue
Dim myDateTimeFrench, culture, DateTimeStyles, SystemArray
Dim SystemType, expectedFormats
myDateTimeFrenchValue = "16/02/1992 12:15:12"
Set culture = DotNetFactory.CreateInstance( CULTURE_INFO, "System", "fr-FR", True )
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Set DateTimeStyles = DotNetFactory.CreateInstance( _
"System.Globalization.DateTimeStyles" )
' ** Creating array of Strings
Set SystemType = DotNetFactory.CreateInstance( "System.Type" )
Set SystemArray = DotNetFactory.CreateInstance( "System.Array" )
Set expectedFormats = SystemArray.CreateInstance( _
SystemType.GetType( "System.String" ), 4 )
expectedFormats.SetValue "G", 0 : expectedFormats.SetValue "g", 1
expectedFormats.SetValue "f", 2 : expectedFormats.SetValue "F", 3
Set myDateTimeFrench = DotNetFactory.CreateInstance( _
"System.DateTime" ).ParseExact( _ myDateTimeFrenchValue, _
expectedFormats, _
culture, _
DateTimeStyles.NoCurrentDateDefault )
MsgBox myDateTimeFrench.ToString()
Set myDateTimeFrench = Nothing : Set culture = Nothing
Set DateTimeStyles = Nothing : Set expectedFormats = Nothing
Set SystemType = Nothing
DateTime.SpecifyKind ( DateTime, DateTimeKind ) Method
Creates a new DateTime object that represents the same time as the specified DateTime, but is designated in either local time, Coordinated Universal Time (UTC), or neither, as indicated by the specified DateTimeKind value.
instance.DateTimeKind( value, kind )
Parameter Description
value A DateTime object.
kind One of the DateTimeKind values.
A new DateTime object consisting of the same time represented by the value
parameter and the DateTimeKind value specified by the kind parameter.
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A DateTime object consists of a Kind field that indicates whether the time value is based on local time, Coordinated Universal Time (UTC), or neither, and a Ticks field that contains a time value measured in 100-nanosecond ticks. The SpecifyKind method creates a new DateTime object using the specified kind parameter and the original time value.
The SpecifyKind method is useful in interoperability scenarios where you receive a DateTime object with an unspecified Kind field, but you can determine by independent means that the Ticks field represents local time or UTC.
The following code example demonstrates the DateTimeKind method.
See Example
DateTime.Subtract Method
Name Description
DateTime.Subtract (DateTime) Subtracts the specified date and time from this instance.
DateTime.Subtract (TimeSpan) Subtracts the specified duration from this instance.
DateTime.Subtract ( DateTime ) Method
Adds a specified time interval to a specified date and time, yielding a new date and time.
Set timeSpan = instance.Subtract( value )
Parameter Description
value An instance of DateTime.
A TimeSpan interval equal to the date and time represented by this instance minus
the date and time represented by value
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
This method does not change the value of this DateTime object. Instead, a new
TimeSpan is returned whose value is the result of this operation.
Before subtracting DateTime objects, insure that the objects represent times in the same time zone. Otherwise, the result will include the difference between time zones.
The following code example demonstrates the addition operator.
Option Explicit
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Dim date1, date2, date3, date4
Dim diff1
Set date1 = DotNetFactory.CreateInstance( "System.DateTime",,1996, 6, 3, 22, 15, 0 )
Print "date1 - " & date1.ToString()
Set date2 = DotNetFactory.CreateInstance( "System.DateTime",,1996, 12, 6, 13, 2, 0 )
Print "date2 - " & date2.ToString()
Set date3 = DotNetFactory.CreateInstance( "System.DateTime",,1996, 10, 12,8, 42, 0 )
Print "date3 - " & date3.ToString()
' ** diff1 gets 185 days, 14 hours, and 47 minutes.
Set diff1 = date2.Subtract( date1 )
Print "diff1 - " & diff1.ToString()
' ** date4 gets 4/9/1996 5:55:00 PM.
Set date4 = date3.Subtract( diff 1)
Print "date4 - " & date4.ToString()
Set date1 = Nothing : Set date2 = Nothing : Set date3 = Nothing
Set date4 = Nothing : Set diff1 = Nothing
DateTime.Subtract ( TimeSpan ) Method
Subtracts the specified duration from this instance.
Set dateTime = instance.Subtract( value )
Parameter Description
value An instance of TimeSpan.
A DateTime equal to the date and time represented by this instance minus the time
interval represented by value.
ArgumentOutOfRangeException - The resulting DateTime is less than MinValue or
greater than MaxValue.
This method does not change the value of this DateTime. Instead, a new DateTime
is returned whose value is the result of this operation
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DateTime.ToFileTime () Method
Converts the value of the current DateTime object to a Windows file time.
instance.ToFileTime()
The value of the current DateTime object expressed as a Windows file time.
ArgumentOutOfRangeException - The resulting file time would represent a date and
time before 12:00 midnight January 1, 1601 C.E. UTC..
A Windows file time is a 64-bit value that represents the number of 100-nanosecond
intervals that have elapsed since 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC). Windows uses a file time to record when an application creates, accesses, or writes to a file.
Previous versions of the ToFileTime method assume the current DateTime object is a local time. Starting with the.NET Framework version 2.0, the ToFileTime method uses the Kind property to determine whether the current DateTime object is a local time, a UTC time, or an unspecified kind of time which is treated as a local time.
The following code example demonstrates the ToFileTime method
Option Explicit
Dim filePath, File
Dim fileCreationDateTime, fileCreationFileTime
Dim oDialog
Set oDialog = CreateObject( "UserAccounts.CommonDialog" )
oDialog.Filter = "QTP Library Files|*.vbs;*.qfl|All Files|*.*"
oDialog.FilterIndex = 1
oDialog.InitialDir = Environment( "ProductDir" )
If oDialog.ShowOpen = 0 Then
ExitTest( 0 )
Else
filePath = oDialog.FileName
End If
Set File = DotNetFactory.CreateInstance( "System.IO.File" )
If File.Exists( filePath ) Then
Set fileCreationDateTime = File.GetCreationTime(filePath)
fileCreationFileTime = fileCreationDateTime.ToFileTime()
Print fileCreationDateTime.ToString & " in file time is " & fileCreationFileTime
Set fileCreationDateTime = Nothing
Else
Print filePath & " is an invalid file"
End If
Set File = Nothing
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DateTime.ToFileTimeUtc () Method
Converts the value of the current DateTime object to a Windows file time.
Set DateTime = instance.ToFileTimeUtc()
The value of the current DateTime object expressed as a Windows file time.
ArgumentOutOfRangeException - The resulting file time would represent a date and
time before 12:00 midnight January 1, 1601 C.E. UTC..
A Windows file time is a 64-bit value that represents the number of 100-nanosecond
intervals that have elapsed since 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC). Windows uses a file time to record when an application creates, accesses, or writes to a file.
Prior versions of the ToFileTimeUtc method assume the current DateTime object is a UTC time. Starting with the.NET Framework version 2.0, the ToFileTimeUtc method uses the Kind property to determine whether the current DateTime object is a local time, a UTC time, or an unspecified kind of time which is treated as a UTC time.
DateTime.ToLocalTime () Method
Converts the value of the current DateTime object to local time.
Set DateTime = instance.ToLocalTime()
A DateTime object whose Kind property is Local, and whose value is the local time
equivalent to the value of the current DateTime object, or MaxValue if the converted value is too large to be represented by a DateTime object, or MinValue if the converted value is too small to be represented as a DateTime object.
ArgumentOutOfRangeException - The resulting file time would represent a date and
time before 12:00 midnight January 1, 1601 C.E. UTC..
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The local time is equal to the UTC time plus the UTC offset. For more information about the UTC offset, see TimeZone.GetUtcOffset. The conversion also takes into account the daylight saving time rule that applies to the time represented by the current DateTime object.
The following code example demonstrates the ToLocalTime method.
Option Explicit
Dim localDT, univDT
Dim sDateTime
sDateTime = "02/13/2006 23:33:45"
Set localDT = DotNetFactory.CreateInstance( "System.DateTime" ).Parse( sDateTime )
Set univDT = localDT.ToUniversalTime()
Print localDT & " local time is " & univDT & " universal time."
sDateTime = "02/14/2006 12:33:45"
Set univDT = DotNetFactory.CreateInstance( "System.DateTime" ).Parse( sDateTime )
Set localDT = univDT.ToLocalTime()
Print univDT & " universal time is " & localDT & " local time."
Set localDT = Nothing : Set univDT = Nothing
DateTime.ToLongDateString () Method
Converts the value of the current DateTime object to its equivalent long date
returnValue = instance.ToLongDateString()
A string that contains the long date string representation of the current DateTime
object.
ArgumentOutOfRangeException - The resulting file time would represent a date and
time before 12:00 midnight January 1, 1601 C.E. UTC..
The value of the current DateTime object is formatted using the long date format
character, 'D'. The long date format character represents the pattern defined by the LongDatePattern property associated with the current thread culture. The return value is identical to the value returned by specifying the "D" standard DateTime format string with the ToString(String) method.
For more information about the current thread culture, see the CurrentCulture property. For more information about format characters, format patterns, and the output they produce, see the Formatting Overview topic. For more information about
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changing the format pattern associated with a format character, see the DateTimeFormatInfo class.
The following code example demonstrates the ToLongDateString method.
Option Explicit
Dim msg1
Dim myDateTime, ci, sb
msg1 = _
"The date and time patterns are defined in the DateTimeFormatInfo " & vbCrLf & _
"object associated with the current appliation culture." & vbCrLf
' ** Initialize a DateTime object.
Print "Initialize the DateTime object to May 16, 2001 3:02:15 AM." & vbCrLf
Set myDateTime = DotNetFactory.CreateInstance( _
"System.DateTime",,2001, 5, 16, 3, 2, 15 )
' ** Identify the source of the date and time patterns.
Print msg1
' ** Display the name of the current culture.
Set sb = DotNetFactory.CreateInstance( "System.Text.StringBuilder" )
Set ci = DotNetFactory.CreateInstance( _
"System.Windows.Forms.Application" ).CurrentCulture()
sb.AppendFormat "Current culture: {0}{1}{0}" & vbCrLf, Chr(34), ci.Name
' ** Display the long date pattern and string.
sb.AppendFormat "Long date pattern: {0}{1}{0}" & vbCrLf, _
Chr(34), ci.DateTimeFormat.LongDatePattern
sb.AppendFormat "Long date string: {0}{1}{0}", _
Chr(34), myDateTime.ToLongDateString()
sb.Append vbCrLf
' ** Display the long time pattern and string.
sb.AppendFormat "Long time pattern: {0}{1}{0}" & vbCrLf, _
Chr(34), ci.DateTimeFormat.LongTimePattern
sb.AppendFormat "Long time string: {0}{1}{0}", _ Chr(34), myDateTime.ToLongTimeString()
sb.Append vbCrLf
' ** Display the short date pattern and string.
sb.AppendFormat "Short date pattern: {0}{1}{0}" & vbCrLf, _
Chr(34), ci.DateTimeFormat.ShortDatePattern
sb.AppendFormat "Short date string: {0}{1}{0}", _ Chr(34), myDateTime.ToShortDateString()
sb.Append vbCrLf
' ** Display the short time pattern and string.
sb.AppendFormat "Short time pattern: {0}{1}{0}" & vbCrLf, _
Chr(34), ci.DateTimeFormat.ShortTimePattern
sb.AppendFormat "Short time string: {0}{1}{0}" & vbCrLf, _
Chr(34), myDateTime.ToShortTimeString()
Print sb.ToString()
Set myDateTime = Nothing : Set ci = Nothing : Set sb = Nothing
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DateTime.ToLongTimeString () Method
Converts the value of the current DateTime object to its equivalent long time string representation.
returnValue = instance.ToLongTimeString()
A string that contains the long time string representation of the current DateTime
object.
The value of the current DateTime object is formatted using the long date format
character, 'D'. The long date format character represents the pattern defined by the LongDatePattern property associated with the current thread culture. The return value is identical to the value returned by specifying the "D" standard DateTime format string with the ToString(String) method.
For more information about the current thread culture, see the CurrentCulture property. For more information about format characters, format patterns, and the output they produce, see the Formatting Overview topic. For more information about changing the format pattern associated with a format character, see the DateTimeFormatInfo class.
The following code example demonstrates the ToLongTimeString method. see Example
DateTime.ToShortDateString () Method
Converts the value of the current DateTime object to its equivalent short date string representation.
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returnValue = instance.ToShortDateString()
A string that contains the short date string representation of the current DateTime
object.
The value of the current DateTime object is formatted using the long date format
character, 'D'. The long date format character represents the pattern defined by the LongDatePattern property associated with the current thread culture. The return value is identical to the value returned by specifying the "D" standard DateTime format string with the ToString(String) method.
For more information about the current thread culture, see the CurrentCulture property. For more information about format characters, format patterns, and the output they produce, see the Formatting Overview topic. For more information about changing the format pattern associated with a format character, see the DateTimeFormatInfo class.
The following code example demonstrates the ToLongTimeString method. see Example
DateTime.ToShortTimeString () Method
Converts the value of the current DateTime object to its equivalent short time string representation.
returnValue = instance.ToShortTimeString()
A string that contains the long time string representation of the current DateTime
object.
The value of the current DateTime object is formatted using the long date format
character, 'D'. The long date format character represents the pattern defined by the LongDatePattern property associated with the current thread culture. The return value is identical to the value returned by specifying the "D" standard DateTime format string with the ToString(String) method.
For more information about the current thread culture, see the CurrentCulture property. For more information about format characters, format patterns, and the output they produce, see the Formatting Overview topic. For more information about changing the format pattern associated with a format character, see the DateTimeFormatInfo class.
The following code example demonstrates the ToShortTimeString method. see Example
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DateTime.ToString Method
Name Description
DateTime.ToString () Converts the value of the current DateTime object to its equivalent string representation.
DateTime.ToString (IFormatProvider)
Converts the value of the current DateTime object to its equivalent string representation using the specified culture-specific format information.
DateTime.ToString (String) Converts the value of the current DateTime object to its equivalent string representation using the specified format.
DateTime.ToString (String, IFormatProvider)
Converts the value of the current DateTime object to its equivalent string representation using the specified format and culture-specific format information.
DateTime.ToString () Method
Converts the value of the current DateTime object to its equivalent string representation.
returnValue = instance.ToString()
A string representation of the value of the current DateTime object.
The value of the current DateTime object is formatted using the general date and
time format specifier ('G').
The .NET Framework provides extensive formatting support, which is described in greater detail in the following formatting topics:
For more information about date and time format specifiers, see Standard DateTime Format Strings and Custom DateTime Format Strings.
For more information about formatting, see Formatting Types and Formatting Overview.
This method uses formatting information derived from the current culture. For more information, see CurrentCulture.
The following code example demonstrates the ToString method.
Option Explicit
Dim msg
Dim thisDate, utcDate, unspecifiedDate, ci, dtk
Set msg = CreateObject( "Scripting.Dictionary" )
msg.Add "MSG_SHORT_DATE", "(d) Short date --> "
msg.Add "MSG_LONG_DATE", "(D) Long date --> "
msg.Add "MSG_SHORT_TIME", "(t) Short time --> "
msg.Add "MSG_LONG_TIME", "(T) Long time --> "
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msg.Add "MSG_FULLSHORT_TIME", "(f) Full date/short time --> "
msg.Add "MSG_FULLLONG_TIME", "(F) Full date/long time --> "
msg.Add "MSG_GENSHORT_TIME", "(g) General date/short time --> "
msg.Add "MSG_GENLONG_TIME", "(G) General date/long time (default) --> "
msg.Add "MSG_MONTH", "(M) Month --> "
msg.Add "MSG_RFC1123", "(R) RFC1123 --> "
msg.Add "MSG_SORT", "(s) Sortable --> "
msg.Add "MSG_UNISOR_VAR", "(u) Universal sortable (invariant) --> "
msg.Add "MSG_UNISORT", "(U) Universal sortable --> "
msg.Add "MSG_YEAR", "(Y) Year --> "
msg.Add "MSG_ROUNDTRIP_LOC", "(o) Roundtrip (local) --> "
msg.Add "MSG_ROUNDTRIP_UTC", "(o) Roundtrip (UTC) --> "
msg.Add "MSG_ROUNDTRIP_UNS", "(o) Roundtrip (Unspecified) --> "
msg.Add "MSG1", "Using ToString( String ) and the current thread culture." & vbCrLf
msg.Add "MSG2", "Using ToString( String, IFormatProvider ) " & _
" and a specified culture." & vbCrLf
msg.Add "MSG_THIS_DATE", "This date and time --> "
Set dtk = DotNetFactory.CreateInstance( "System.DateTimeKind" )
Set thisDate = DotNetFactory.CreateInstance( "System.DateTime" ).Now()
Set utcDate = DotNetFactory.CreateInstance( "System.DateTime" ).ToUniversalTime()
Set unspecifiedDate = DotNetFactory.CreateInstance( _
"System.DateTime", ,2000, 3, 20, 13, 2, 3, 0, dtk.Unspecified )
' ** Format the current date and time in various ways.
Print "Standard DateTime Format Specifiers:" & vbCrLf
Print msg( "MSG_THIS_DATE" ) & thisDate.ToString() & vbCrLf
Print msg( "MSG1" )
' ** Display the thread current culture, which is used to format the values.
Set ci = DotNetFactory.CreateInstance( _
"System.Windows.Forms.Application" ).CurrentCulture()
Print "Culture --> " & ci.DisplayName
Print msg( "MSG_SHORT_DATE" ) & thisDate.ToString( "d" )
Print msg( "MSG_LONG_DATE" ) & thisDate.ToString( "D" )
Print msg( "MSG_SHORT_TIME" ) & thisDate.ToString( "t" )
Print msg( "MSG_LONG_TIME" ) & thisDate.ToString( "T" )
Print msg( "MSG_FULLSHORT_TIME" ) & thisDate.ToString( "f" )
Print msg( "MSG_FULLLONG_TIME" ) & thisDate.ToString( "F" )
Print msg( "MSG_GENSHORT_TIME" ) & thisDate.ToString( "g" )
Print msg( "MSG_GENLONG_TIME" ) & thisDate.ToString( "G" )
Print msg( "MSG_MONTH" ) & thisDate.ToString( "M" )
Print msg( "MSG_RFC1123" ) & utcDate.ToString( "R" )
Print msg( "MSG_SORT" ) & thisDate.ToString( "s" )
Print msg( "MSG_UNISOR_VAR" ) & utcDate.ToString( "u" )
Print msg( "MSG_UNISORT" ) & thisDate.ToString( "U" )
Print msg( "MSG_YEAR" ) & thisDate.ToString( "Y" )
Print msg( "MSG_ROUNDTRIP_LOC" ) & thisDate.ToString( "o" )
Print msg( "MSG_ROUNDTRIP_UTC" ) & utcDate.ToString( "o" )
Print msg( "MSG_ROUNDTRIP_UNS" ) & unspecifiedDate.ToString( "o" )
Print String( 50, "=" ) & vbCrLf
' ** Display the same values using a CultureInfo object. The CultureInfo class
' ** implements IFormatProvider.
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Print msg( "MSG2" )
' ** Display the culture used to format the values.
Set ci = DotNetFactory.CreateInstance( _
"System.Globalization.CultureInfo",, "de-DE" )
Print "Culture --> " & ci.DisplayName
Print msg( "MSG_SHORT_DATE" ) & thisDate.ToString( "d", ci )
Print msg( "MSG_LONG_DATE" ) & thisDate.ToString( "D", ci )
Print msg( "MSG_SHORT_TIME" ) & thisDate.ToString( "t", ci )
Print msg( "MSG_LONG_TIME" ) & thisDate.ToString( "T", ci )
Print msg( "MSG_FULLSHORT_TIME" ) & thisDate.ToString( "f", ci )
Print msg( "MSG_FULLLONG_TIME" ) & thisDate.ToString( "F", ci )
Print msg( "MSG_GENSHORT_TIME" ) & thisDate.ToString( "g", ci )
Print msg( "MSG_GENLONG_TIME" ) & thisDate.ToString( "G", ci )
Print msg( "MSG_MONTH" ) & thisDate.ToString( "M", ci )
Print msg( "MSG_RFC1123" ) & utcDate.ToString( "R", ci )
Print msg( "MSG_SORT" ) & thisDate.ToString( "s", ci )
Print msg( "MSG_UNISOR_VAR" ) & utcDate.ToString( "u", ci )
Print msg( "MSG_UNISORT" ) & thisDate.ToString( "U", ci )
Print msg( "MSG_YEAR" ) & thisDate.ToString( "Y", ci )
Print msg( "MSG_ROUNDTRIP_LOC" ) & thisDate.ToString( "o", ci )
Print msg( "MSG_ROUNDTRIP_UTC" ) & utcDate.ToString( "o", ci )
Print msg( "MSG_ROUNDTRIP_UNS" ) & unspecifiedDate.ToString( "o", ci )
Print String( 50, "=" ) & vbCrLf
Set dtk = Nothing : Set msg = Nothing
Set thisDate = Nothing : Set utcDate = Nothing : Set unspecifiedDate = Nothing
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DateTime.ToString ( IFormatProvider ) Method
Converts the value of the current DateTime object to its equivalent string representation using the specified culture-specific format information.
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returnValue = instance.ToString( provider )
Parameter Description
provider An IFormatProvider that supplies culture-specific formatting information.
A string representation of value of the current DateTime object as specified by
provider..
The value of the current DateTime object is formatted using the general date and
time format specifier ('G').
The .NET Framework provides extensive formatting support, which is described in greater detail in the following formatting topics:
For more information about date and time format specifiers, see Standard DateTime Format Strings and Custom DateTime Format Strings.
For more information about formatting, see Formatting Types and Formatting Overview.
This method uses formatting information derived from the current culture. For more information, see CurrentCulture.
The following code example demonstrates the ToString method. see Example ToString
DateTime.ToString ( String ) Method
Converts the value of the current DateTime object to its equivalent string representation using the specified format.
returnValue = instance.ToString( format )
Parameter Description
format A DateTime format string.
A string representation of value of the current DateTime object as specified by
format.
FormatException
The length of format is 1, and it is not one of the format specifier characters defined for DateTimeFormatInfo.
format does not contain a valid custom format pattern.
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The format parameter should contain either a format specifier character or a custom
format pattern. For more information, see the summary page for System.Globalization.DateTimeFormatInfo.
If format is a null reference (Nothing in Visual Basic) or an empty string, the general format specifier, 'G', is used.
The .NET Framework provides extensive formatting support, which is described in greater detail in the following formatting topics:
For more information about date and time format specifiers, see Standard DateTime Format Strings and Custom DateTime Format Strings.
For more information about formatting, see Formatting Types and Formatting Overview.
The following code example demonstrates the ToString method. see also Example ToString
Option Explicit
Dim DateTime
Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" ).Now()
Print "%d --> " & DateTime.ToString( "%d" )
Print "dd --> " & DateTime.ToString( "dd" )
Print "ddd --> " & DateTime.ToString( "ddd" )
Print "dddd --> " & DateTime.ToString( "dddd" )
Print "ddd, d --> " & DateTime.ToString( "ddd, d" )
Print "ff --> " & DateTime.ToString( "ff" )
Print "fff --> " & DateTime.ToString( "fff" )
Print "fffff --> " & DateTime.ToString( "fffff" )
Print "gg --> " & DateTime.ToString( "gg" )
Print "hh --> " & DateTime.ToString( "hh" )
Print "HH --> " & DateTime.ToString( "HH" )
Print "MM --> " & DateTime.ToString( "MM" )
Print "MMM --> " & DateTime.ToString( "MMM" )
Print "MMMM --> " & DateTime.ToString( "MMMM" )
Print "tt --> " & DateTime.ToString( "tt" )
Print "yy --> " & DateTime.ToString( "yy" )
Print "yyyy --> " & DateTime.ToString( "yyyy" )
Print "zz --> " & DateTime.ToString( "zz" )
Print "zzz --> " & DateTime.ToString( "zzz" )
Print "%h --> " & DateTime.ToString( "%h" )
Print "yyyy %g --> " & DateTime.ToString( "yyyy %g" )
Print "d, ddd MMM yyyy K --> " & DateTime.ToString( "d, dddd MMM yyyy K" )
Print "Log_" & DateTime.ToString( "ddMMyyyy_HHmmss" ) & ".txt"
Print "Log_" & DateTime.ToString( "ddMMyyyy_hmmsstt" ) & ".txt"
Set DateTime = Nothing
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DateTime.ToString ( String, IFormatProvider ) Method
Converts the value of the current DateTime object to its equivalent string representation using the specified format and culture-specific format information.
returnValue = instance.ToString( format, provider )
Parameter Description
format A DateTime format string.
provider An IFormatProvider that supplies culture-specific formatting information.
A string representation of value of the current DateTime object as specified by
format and provider
Exception
Format Exception
The length of format is 1, and it is not one of the format specifier characters defined for DateTimeFormatInfo.
format does not contain a valid custom format pattern.
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The format parameter should contain either a format specifier character or a custom
format pattern. For more information, see the summary page for System.Globalization.DateTimeFormatInfo.
If format is a null reference (Nothing in Visual Basic) or an empty string, the general format specifier, 'G', is used.
The .NET Framework provides extensive formatting support, which is described in greater detail in the following formatting topics:
For more information about date and time format specifiers, see Standard DateTime Format Strings and Custom DateTime Format Strings.
For more information about formatting, see Formatting Types and Formatting Overview.
The following code example demonstrates the ToString method. see Example ToString
DateTime.ToUniversalTime () Method
Converts the value of the current DateTime object to Coordinated Universal Time (UTC).
returnValue = instance.ToUniversalTime()
A DateTime object whose Kind property is Utc, and whose value is the UTC
equivalent to the value of the current DateTime object, or MaxValue if the converted value is too large to be represented by a DateTime object, or MinValue if the converted value is too small to be represented by a DateTime object.
The UTC time is equal to the local time minus the UTC offset. For more information
about the UTC offset, see TimeZone.GetUtcOffset. The conversion also takes into account the daylight saving time rule that applies to the time represented by the current DateTime object.
The value returned by this conversion is a DateTime object whose Kind property is Utc. Consequently, a valid result is returned even if ToUniversalTime is applied repeatedly to the same DateTime object.
This method always uses the local time zone when making calculations.
DateTime.TryParse Method
Name Description
DateTime.TryParse (String, DateTime)
Converts the specified string representation of a date and time to its DateTime equivalent.
DateTime.TryParse (String, IFormatProvider, DateTimeStyles, DateTime)
Converts the specified string representation of a date and time to its DateTime equivalent using the specified culture-specific format information and formatting style.
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DateTime.TryParse ( String, DateTime ) Method
Converts the specified string representation of a date and time to its DateTime equivalent.
returnValue = instance.TryParse( s, result )
Parameter Description
s A string containing a date and time to convert.
result
When this method returns, contains the DateTime value equivalent to the date and time contained in s, if the conversion succeeded, or MinValue if the conversion failed. The conversion fails if the s parameter is a null reference (Nothing in Visual Basic), or does not contain a valid string representation of a date and time. This parameter is passed uninitialized.
true if the s parameter was converted successfully; otherwise, false.
The TryParse method is similar to the Parse method, except that the TryParse
method does not throw an exception if the conversion fails.
The string s is parsed using formatting information in the current DateTimeFormatInfo object, which is supplied implicitly by the current thread culture.
This method attempts to ignore unrecognized data and parse s completely. It ignores unrecognized data if possible and fills in missing month, day, and year information with the current time. If s contains only a date and no time, this method assumes the time is 12:00 midnight. Any leading, inner, or trailing white space character in s is ignored. The date and time can be bracketed with a pair of leading and trailing NUMBER SIGN characters ('#', U+0023), and can be trailed with one or more NULL characters (U+0000).
The s parameter must contain the representation of a date and time in one of the formats described in the DateTimeFormatInfo class.
Notes to Callers: Formatting is influenced by properties of the current DateTimeFormatInfo object, which by default are derived from the Regional and Language Options item in Control Panel. One reason the TryParse method can unexpectedly throw FormatException is if the current DateTimeFormatInfo.DateSeparator and DateTimeFormatInfo.TimeSeparator properties are set to the same value.
The following code example demonstrates the TryParse method.
Option Explicit
Dim DateTime, myDateTime
Dim myDateTimeValue
myDateTimeValue = "2/16/1992 12:15:12"
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Set DateTime = DotNetFactory.CreateInstance( "System.DateTime" )
Set myDateTime = DotNetFactory.CreateInstance( "System.DateTime" )
If DateTime.TryParse( myDateTimeValue, myDateTime ) Then
MsgBox myDateTime.ToString()
End If
Set DateTime = Nothing : Set myDateTime = Nothing
DateTime.TryParse ( String, IFormatProvider, DateTimeStyles, DateTime ) Method
Converts the specified string representation of a date and time to its DateTime equivalent using the specified culture-specific format information and formatting style.
returnValue = instance.TryParse( s, provider, styles, result )
Parameter Description
s A string containing a date and time to convert.
result An IFormatProvider object that supplies culture-specific formatting information about s.
styles A bitwise combination of DateTimeStyles values that indicates the permitted format of s. A typical value to specify is None.
result
When this method returns, contains the DateTime value equivalent to the date and time contained in s, if the conversion succeeded, or MinValue if the conversion failed. The conversion fails if the s parameter is a null reference (Nothing in Visual Basic), or does not contain a valid string representation of a date and time. This parameter is passed uninitialized.
true if the s parameter was converted successfully; otherwise, false.
ArgumentException
If format is a null reference (Nothing in Visual Basic) or an empty string, the general format specifier, 'G', is used.
The .NET Framework provides extensive formatting support, which is described in greater detail in the following formatting topics:
styles is not a valid DateTimeStyles value.
styles contains an invalid combination of DateTimeStyles values (for example, both AssumeLocal and AssumeUniversal ).
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The TryParse method is similar to the Parse method, except that the TryParse
method does not throw an exception if the conversion fails.
The string s is parsed using formatting information in the current DateTimeFormatInfo object, which is supplied implicitly by the current thread culture.
This method attempts to ignore unrecognized data and parse s completely. It ignores unrecognized data if possible and fills in missing month, day, and year information with the current time. If s contains only a date and no time, this method assumes the time is 12:00 midnight. Any leading, inner, or trailing white space character in s is ignored. The date and time can be bracketed with a pair of leading and trailing NUMBER SIGN characters ('#', U+0023), and can be trailed with one or more NULL characters (U+0000).
The s parameter must contain the representation of a date and time in one of the formats described in the DateTimeFormatInfo class.
The provider parameter supplies culture-specific date and time formatting information. For example, it might supply the names of the days of the week in a particular language, or the preferred order of presentation for the month, day, and year. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
Notes to Callers: Formatting is influenced by properties of the current DateTimeFormatInfo object, which by default are derived from the Regional and Language Options item in Control Panel. One reason the TryParse method can unexpectedly throw FormatException is if the current DateTimeFormatInfo.DateSeparator and DateTimeFormatInfo.TimeSeparator properties are set to the same value.
DateTime.TryParseExact Method
Name Description
DateTime.TryParseExact Method (String, String, IFormatProvider, DateTimeStyles, DateTime)
Converts the specified string representation of a date and time to its DateTime equivalent using the specified format, culture-specific format information, and style. The format of the string representation must match the specified format exactly.
DateTime.TryParseExact (String, String[], IFormatProvider, DateTimeStyles, DateTime)
Converts the specified string representation of a date and time to its DateTime equivalent using the specified array of formats, culture-specific format information, and style. The format of the string representation must match at least one of the specified formats exactly
DateTime.TryParse ( String, String, IFormatProvider, DateTimeStyles, DateTime ) Method
Converts the specified string representation of a date and time to its DateTime equivalent using the specified format, culture-specific format information, and style. The format of the string representation must match the specified format exactly.
returnValue = instance.TryParseExact( s, format, provider, styles, result )
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Parameter Description
s A string containing a date and time to convert.
format The expected format of s.
provider An IFormatProvider object that supplies culture-specific formatting information about s.
style bitwise combination of one or more DateTimeStyles values that indicate the permitted format of s.
result
When this method returns, contains the DateTime value equivalent to the date and time contained in s, if the conversion succeeded, or MinValue if the conversion failed. The conversion fails if the s parameter is a null reference (Nothing in Visual Basic), or does not contain a valid string representation of a date and time. This parameter is passed uninitialized.
true if the s parameter was converted successfully; otherwise, false.
ArgumentException
styles is not a valid DateTimeStyles value.
styles contains an invalid combination of DateTimeStyles values (for example, both AssumeLocal and AssumeUniversal ).
The TryParseExact method is similar to the ParseExact method, except that the
TryParseExact method does not throw an exception if the conversion fails.
The s parameter contains the date and time to parse. If the s parameter contains only a time and no date, the style parameter determines whether the current date or a default date is used. If the s parameter contains only a date and no time, midnight (00:00:00) is used. The style parameter also determines whether the s parameter can contain leading, inner, or trailing white space characters
The format parameter contains a pattern that corresponds to the expected format of the s parameter. The pattern in the format parameter consists of one or more custom format specifiers from the Custom DateTime Format Strings table, or a single standard format specifier, which identifies a predefined pattern, from the Standard DateTime Format Strings table.
If you do not use date or time separators in a custom format pattern, use the invariant culture for the provider parameter and the widest form of each custom format specifier. For example, if you want to specify hours in the pattern, specify the wider form, "HH", instead of the narrower form, "H".
The provider parameter supplies culture-specific date and time formatting information, such as the names of the days of the week in a particular language, or the preferred presentation order of the month, day, and year. The format parameter is typically a culture represented by a CultureInfo object. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
DateTime.TryParse ( String, String[], IFormatProvider, DateTimeStyles, DateTime ) Method
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Converts the specified string representation of a date and time to its DateTime equivalent using the specified format, culture-specific format information, and style. The format of the string representation must match the specified format exactly.
returnValue = instance.TryParseExact( s, format, provider, styles, result )
Parameter Description
s A string containing a date and time to convert.
formats An array of expected formats of s.
provider An IFormatProvider object that supplies culture-specific formatting information about s.
style bitwise combination of one or more DateTimeStyles values that indicate the permitted format of s.
result
When this method returns, contains the DateTime value equivalent to the date and time contained in s, if the conversion succeeded, or MinValue if the conversion failed. The conversion fails if the s parameter is a null reference (Nothing in Visual Basic), or does not contain a valid string representation of a date and time. This parameter is passed uninitialized.
true if the s parameter was converted successfully; otherwise, false.
ArgumentException
styles is not a valid DateTimeStyles value.
styles contains an invalid combination of DateTimeStyles values (for example, both AssumeLocal and AssumeUniversal ).
The TryParseExact method is similar to the ParseExact method, except that the
TryParseExact method does not throw an exception if the conversion fails.
The s parameter contains the date and time to parse. If the s parameter contains only a time and no date, the style parameter determines whether the current date or a default date is used. If the s parameter contains only a date and no time, midnight (00:00:00) is used. The style parameter also determines whether the s parameter can contain leading, inner, or trailing white space characters
The format parameter contains a pattern that corresponds to the expected format of the s parameter. The pattern in the format parameter consists of one or more custom format specifiers from the Custom DateTime Format Strings table, or a single standard format specifier, which identifies a predefined pattern, from the Standard DateTime Format Strings table.
If you do not use date or time separators in a custom format pattern, use the invariant culture for the provider parameter and the widest form of each custom format specifier. For example, if you want to specify hours in the pattern, specify the wider form, "HH", instead of the narrower form, "H".
The provider parameter supplies culture-specific date and time formatting information, such as the names of the days of the week in a particular language, or the preferred presentation order of the month, day, and year. The format
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parameter is typically a culture represented by a CultureInfo object. If provider is a null reference (Nothing in Visual Basic), the current culture is used.
System.TimeSpan Structure
A TimeSpan object represents a time interval, or duration of time, measured as a positive or negative number of days, hours, minutes, seconds, and fractions of a second. The largest unit of time used to measure duration is a day. Time intervals are measured in days for consistency because the number of days in larger units of time, such as months and years, varies.
The value of a TimeSpan object is the number of ticks that equal the represented time interval. A tick is equal to 100 nanoseconds, and the value of a TimeSpan object can range from MinValue to MaxValue.
A TimeSpan value can be represented as [-]d.hh:mm:ss.ff, where the optional minus sign indicates a negative time interval, the d component is days, hh is hours as measured on a 24-hour clock, mm is minutes, ss is seconds, and ff is fractions of a second. That is, a time interval consists of a positive or negative number of days without a time of day, or a number of days with a time of day, or only a time of day. For example, the text representation of a TimeSpan object initialized to 1.0e+13 ticks is "11.13:46:40", which means 11 days, 13 hours, 46 minutes, and 40 seconds.
For more information see : http://msdn2.microsoft.com/en-us/library/system.timespan.aspx
System.TimeSpan Contructors
Initializes a new TimeSpan.
Name Description
TimeSpan (Int64) Initializes a new TimeSpan to the specified number of ticks.
TimeSpan (Int32, Int32, Int32) Initializes a new TimeSpan to a specified number of hours, minutes, and seconds.
TimeSpan (Int32, Int32, Int32, Int32)
Initializes a new TimeSpan to a specified number of days, hours, minutes, and seconds.
TimeSpan (Int32, Int32, Int32, Int32, Int32)
Initializes a new TimeSpan to a specified number of days, hours, minutes, seconds, and milliseconds.
DateTime.TimeSpan ( int64 ) Constructor
Initializes a new TimeSpan to the specified number of ticks.
Set object = DotNetFactory.CreateInstance( "System.TimeSpan", , ticks )
Parameter Description
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ticks A time period expressed in 100-nanosecond units.
System.TimeSpan object
ArgumentOutOfRangeException - ticks is less than MinValue or greater than
MaxValue.
ArgumentException - Kind is not one of the DateTimeKind values.
The following code example creates several TimeSpan objects using the constructor overload that initializes a TimeSpan to a specified number of ticks.
Option Explicit
Dim int64
' ** Create a TimeSpan object and display its value.
Sub CreateTimeSpan( ByRef ticks )
Dim ctor, elapsedStr
Dim pointIndex, elapsedTime
Set elapsedTime = DotNetFactory.CreateInstance( "System.TimeSpan",, ticks )
' ** Format the constructor for display.
ctor = "TimeSpan( " & ticks & " )"
' ** Pad the end of a TimeSpan string with spaces if it does not contain ' milliseconds.
elapsedStr = elapsedTime.ToString( )
pointIndex = Instr( 1, elapsedStr, ":" )
pointIndex = Instr( pointIndex, elapsedStr, "." )
If pointIndex < 0 Then elapsedStr = " "
' ** Display the constructor and its value.
Print ctor & " ---> " & elapsedStr
End Sub
Print "This example of the TimeSpan( Long ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf
CreateTimeSpan( 1 )
CreateTimeSpan( 999999 )
' ** Beacause vbScript cannot handle numbers greater then Long.MaxValue
Set int64 = DotNetFactory.CreateInstance( "System.Int64" ).Parse( "-1000000000000" )
CreateTimeSpan( int64 )
Set int64 = DotNetFactory.CreateInstance( "System.Int64" ).Parse( "18012202000000" )
CreateTimeSpan( int64 )
Set int64 = DotNetFactory.CreateInstance( _
"System.Int64" ).Parse( "999999999999999999" )
CreateTimeSpan( int64 )
Set int64 = DotNetFactory.CreateInstance( "System.Int64" ).Parse( "18012202000000" )
CreateTimeSpan( int64 ) Set int64 = Nothing
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DateTime.TimeSpan ( int32, int32, int32 ) Constructor
Initializes a new TimeSpan to a specified number of hours, minutes, and seconds.
Set object = DotNetFactory.CreateInstance( "System.TimeSpan", , hours, minutes, seconds )
Parameter Description
hours Number of hours.
minutes Number of minutes.
seconds Number of seconds.
System.TimeSpan object
ArgumentOutOfRangeException - The parameters specify a TimeSpan value less
than than MinValue or greater than MaxValue.
The specified hours, minutes, and seconds are converted to ticks, and that value
initializes this instance.
The following code example creates several TimeSpan objects using the constructor overload that initializes a TimeSpan to a specified number of hours, minutes, and seconds.
Option Explicit
' ** Create a TimeSpan object and display its value.
Sub CreateTimeSpan( ByVal hours, ByVal minutes, ByVal seconds )
Dim ctor, sb
Dim elapsedTime
Set elapsedTime = DotNetFactory.CreateInstance( _
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"System.TimeSpan",, hours, minutes, seconds )
Set sb = DotNetFactory.CreateInstance( "System.Text.StringBuilder" )
' ** Format the constructor for display.
ctor = sb.AppendFormat( "TimeSpan( {0}, {1}, {2} )", _
hours, minutes, seconds ).ToString
' ** Display the constructor and its value.
Print ctor & " ---> " & elapsedTime.ToString()
Set sb = Nothing
End Sub
Print "This example of the TimeSpan( Integer, Integer, Integer ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf
Call CreateTimeSpan( 10, 20, 30 )
Call CreateTimeSpan( -10, 20, 30 )
Call CreateTimeSpan( 0, 0, 37230 )
Call CreateTimeSpan( 1000, 2000, 3000 )
Call CreateTimeSpan( 1000, -2000, -3000 )
Call CreateTimeSpan( 999999, 999999, 999999 )
DateTime.TimeSpan ( int32, int32, int32, int32 ) Constructor
Initializes a new TimeSpan to a specified number of days, hours, minutes, and seconds.
Set object = DotNetFactory.CreateInstance( "System.TimeSpan", , days, hours, minutes, seconds )
Parameter Description
days Number of days.
hours Number of hours.
minutes Number of minutes.
seconds Number of seconds.
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System.TimeSpan object
ArgumentOutOfRangeException - The parameters specify a TimeSpan value less
than than MinValue or greater than MaxValue.
The specified days, hours, minutes, and seconds are converted to ticks, and that
value initializes this instance.
The following code example creates several TimeSpan objects using the constructor overload that initializes a TimeSpan to a specified number of days, hours, minutes, and seconds.
Option Explicit
' ** Create a TimeSpan object and display its value.
Sub CreateTimeSpan( ByVal Days, ByVal hours, ByVal minutes, ByVal seconds )
Dim ctor, sb
Dim elapsedTime
Set elapsedTime = DotNetFactory.CreateInstance( _
"System.TimeSpan",, days, hours, minutes, seconds )
Set sb = DotNetFactory.CreateInstance( "System.Text.StringBuilder" )
' ** Format the constructor for display.
ctor = sb.AppendFormat( "TimeSpan( {0}, {1}, {2} {3} )", _
days, hours, minutes, seconds ).ToString
' ** Display the constructor and its value.
Print ctor & " ---> " & elapsedTime.ToString()
Set sb = Nothing
End Sub
Print "This example of the TimeSpan " & _
" ( Integer, Integer, Integer, Integer ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf
Call CreateTimeSpan( 10, 20, 30, 40 )
Call CreateTimeSpan( -10, 20, 30, 40 )
Call CreateTimeSpan( 0, 0, 0, 937840 )
Call CreateTimeSpan( 1000, 2000, 3000, 4000 )
Call CreateTimeSpan( 1000, -2000, -3000, -4000 )
Call CreateTimeSpan( 999999, 999999, 999999, 999999 )
DateTime.TimeSpan ( int32, int32, int32, int32, int32 ) Constructor
Initializes a new TimeSpan to a specified number of days, hours, minutes, seconds, and milliseconds.
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Set object = DotNetFactory.CreateInstance( "System.TimeSpan", , days, hours, minutes, seconds, milliseconds )
Parameter Description
days Number of days.
hours Number of hours.
minutes Number of minutes.
seconds Number of seconds.
milliseconds Number of milliseconds
System.TimeSpan object
ArgumentOutOfRangeException - The parameters specify a TimeSpan value less than
than MinValue or greater than MaxValue.
The specified days, hours, minutes, seconds, and milliseconds are converted to
ticks, and that value initializes this instance.
The following code example creates several TimeSpan objects using the constructor overload that initializes a TimeSpan to a specified number of days, hours, minutes, seconds, and milliseconds.
Option Explicit
' ** Create a TimeSpan object and display its value.
Sub CreateTimeSpan( _
ByVal Days, ByVal hours, ByVal minutes, ByVal seconds, ByVal milliseconds )
Dim ctor, sb
Dim elapsedTime
Set elapsedTime = DotNetFactory.CreateInstance( _
"System.TimeSpan",, days, hours, minutes, seconds )
Set sb = DotNetFactory.CreateInstance( "System.Text.StringBuilder" )
' ** Format the constructor for display.
ctor = sb.AppendFormat( "TimeSpan( {0}, {1}, {2} {3} {4} )", _
days, hours, minutes, seconds, milliseconds ).ToString
' ** Display the constructor and its value.
Print ctor & " ---> " & elapsedTime.ToString()
Set sb = Nothing
End Sub
Print "This example of the TimeSpan " & _
" ( Integer, Integer, Integer, Integer, Integer ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf
Call CreateTimeSpan( 10, 20, 30, 40, 50 )
Call CreateTimeSpan( -10, 20, 30, 40, 50 )
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Call CreateTimeSpan( 0, 0, 0, 0, 937840050 )
Call CreateTimeSpan( 1111, 2222, 3333, 4444, 5555 )
Call CreateTimeSpan( 1111, -2222, -3333, -4444, -5555 )
Call CreateTimeSpan( 99999, 99999, 99999, 99999, 99999 )
System.TimeSpan Fields
Name Description
MaxValue Represents the maximum TimeSpan value. This field is read-only.
MinValue Represents the minimum TimeSpan value. This field is read-only.
TicksPerDay Represents the number of ticks in 1 day. This field is constant.
TicksPerHour Represents the number of ticks in 1 hour. This field is constant.
TicksPerMillisecond Represents the number of ticks in 1 millisecond. This field is constant.
TicksPerMinute Represents the number of ticks in 1 minute. This field is constant.
TicksPerSecond Represents the number of ticks in 1 second.
Zero Represents the zero TimeSpan value. This field is read-only
TimeSpan.MaxValue Field
Represents the maximum TimeSpan value. This field is read-only.
The value of this field is equivalent to Int64.MaxValue ticks. The string
representation of this value is positive 10675199.02:48:05.4775807.
The following code example references and displays the value of the MaxValue field.
Option Explicit
Dim timeSpan
Set timeSpan = DotNetFactory.CreateInstance( "System.TimeSpan" )
Print _
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"This example of the fields of the TimeSpan class" & _
vbCrLf & "generates the following output." & vbCrLf
' ** Display the maximum, minimum, and zero TimeSpan values.
Print "Maximum TimeSpan ---> " & timeSpan.MaxValue.ToString()
Print "Minimum TimeSpan ---> " & timeSpan.MinValue.ToString()
Print "Zero TimeSpan ---> " & timeSpan.Zero.ToString()
Print "Ticks per day ---> " & timeSpan.TicksPerDay.ToString()
Print "Ticks per hour ---> " & timeSpan.TicksPerHour.ToString()
Print "Ticks per minute ---> " & timeSpan.TicksPerMinute.ToString()
Print "Ticks per second ---> " & timeSpan.TicksPerSecond.ToString()
Print "Ticks per millisecond ---> " & timeSpan.TicksPerMillisecond.ToString()
Set timeSpan = Nothing
TimeSpan.MinValue Field
Represents the minimum TimeSpan value. This field is read-only.
The value of this field is equivalent to Int64.MinValue ticks. The string representation
of this value is negative 10675199.02:48:05.4775808.
TimeSpan.TicksPerDay Field
Represents the number of ticks in 1 day. This field is constant.
The value of this constant is 864 billion; that is, 864,000,000,000.
TimeSpan.TicksPerHour Field
Represents the number of ticks in 1 hour. This field is constant.
The value of this constant is 36 billion; that is, 36,000,000,000.
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TimeSpan.TicksPerMillisecond Field
Represents the number of ticks in 1 millisecond. This field is constant.
The value of this constant is 10 thousand; that is, 10,000.
TimeSpan.TicksPerMinute Field
Represents the number of ticks in 1 minute. This field is constant
The value of this constant is 600 million; that is, 600,000,000.
TimeSpan.TicksPerSecond Field
Represents the number of ticks in 1 second.
The value of this constant is 10 million; that is, 10,000,000
TimeSpan.Zero Field
Represents the zero TimeSpan value. This field is read-only.
This constant provides a convenient source for zero in time calculations.
TimeSpan Properties
Name Description
Days Gets the number of whole days represented by the current TimeSpan structure.
Hours Gets the number of whole hours represented by the current TimeSpan structure.
Milliseconds Gets the number of whole milliseconds represented by the current TimeSpan structure.
Minutes Gets the number of whole seconds represented by the current TimeSpan structure.
Seconds Gets the number of whole seconds represented by the current TimeSpan structure.
Ticks Gets the number of ticks that represent the value of the current TimeSpan structure.
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TotalDays Gets the value of the current TimeSpan structure expressed in whole and fractional days.
TotalHours Gets the value of the current TimeSpan structure expressed in whole and fractional hours.
TotalMilliseconds Gets the value of the current TimeSpan structure expressed in whole and fractional milliseconds.
TotalMinutes Gets the value of the current TimeSpan structure expressed in whole and fractional minutes.
TotalSeconds Gets the value of the current TimeSpan structure expressed in whole and fractional seconds.
TimeSpan.Days Property
Gets the number of whole days represented by the current TimeSpan structure.
returnValue = object.Days
The day component of this instance. The return value can be positive or negative.
A TimeSpan value can be represented as [-]d.hh:mm:ss.ff, where the optional
minus sign indicates a negative time interval, the d component is days, hh is hours as measured on a 24-hour clock, mm is minutes, ss is seconds, and ff is fractions of a second. The value of the Days property is the day component, d.
The following code example creates several TimeSpan objects and displays the Days property of each.
Option Explicit
Dim timeSpan, int64
' ** Display the properties of the TimeSpan parameter.
Sub ShowTimeSpanProperties( Byref interval )
Print "Interval : " & interval.ToString()
Print "Days : " & interval.Days & vbTab & _
"TotalDays : " & interval.TotalDays
Print "Hours : " & interval.Hours & vbTab & _
"TotalHours : " & interval.TotalHours
Print "Minutes : " & interval.Minutes & vbTab & _
"TotalMinutes : " & interval.TotalMinutes
Print "Seconds : " & interval.Seconds & vbTab & _
"TotalSeconds : " & interval.TotalSeconds
Print "Milliseconds : " & interval.Milliseconds & vbTab & _
"TotalMilliseconds : " & interval.TotalMilliseconds
Print "Ticks : " & interval.Ticks
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End Sub
Print "This example of the TimeSpan class properties " & _
"generates the " & vbCrLf & "following output. It " & _
"creates several TimeSpan objects and " & vbCrLf & _
"displays the values of the TimeSpan properties for " & _
"each."
' ** Create and display a TimeSpan value of 1 tick.
Print "TimeSpan( 1 )"
Set timeSpan = DotNetFactory.CreateInstance( "System.TimeSpan",, 1 )
Call ShowTimeSpanProperties( timeSpan )
' ** Create a TimeSpan value with a large number of ticks.
Print vbCrLf & "TimeSpan( 111222333444555 )"
Set int64 = DotNetFactory.CreateInstance( _
"System.Int64" ).Parse( "111222333444555" )
Set timeSpan = DotNetFactory.CreateInstance( "System.TimeSpan",, int64 )
Call ShowTimeSpanProperties( timeSpan )
Set int64 = Nothing
' ** This TimeSpan has all fields specified.
Print vbCrLf & "TimeSpan( 10, 20, 30, 40, 50 )"
Set timeSpan = DotNetFactory.CreateInstance( "System.TimeSpan",,10, 20, 30, 40, 50 )
Call ShowTimeSpanProperties( timeSpan )
' ** This TimeSpan has all fields overflowing.
Print vbCrLf & "TimeSpan( 1111, 2222, 3333, 4444, 5555 )"
Set timeSpan = DotNetFactory.CreateInstance( _
"System.TimeSpan",,1111, 2222, 3333, 4444, 5555 )
Call ShowTimeSpanProperties( timeSpan )
' ** This TimeSpan is based on a number of days.
Print vbCrLf & "FromDays( 20.84745602 )"
Set timeSpan = DotNetFactory.CreateInstance( _
"System.TimeSpan" ).FromDays( 20.84745602 )
Call ShowTimeSpanProperties( timeSpan )
Set timeSpan = Nothing
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TimeSpan.Hours Property
Gets the number of whole days represented by the current TimeSpan structure.
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returnValue = object.Hours
The day component of this instance. The return value can be positive or negative.
A TimeSpan value can be represented as [-]d.hh:mm:ss.ff, where the optional
minus sign indicates a negative time interval, the d component is days, hh is hours as measured on a 24-hour clock, mm is minutes, ss is seconds, and ff is fractions of a second. The value of the Days property is the day component, d.
The following code example creates several TimeSpan objects and displays the Hours property of each. See Example TimeSpan Properties
TimeSpan.Milliseconds Property
Gets the number of whole milliseconds represented by the current TimeSpan structure.
returnValue = object.Milliseconds
The millisecond component of the current TimeSpan structure. The return value ranges from -999 through 999.
A TimeSpan value can be represented as [-]d.hh:mm:ss.ff, where the optional
minus sign indicates a negative time interval, the d component is days, hh is hours as measured on a 24-hour clock, mm is minutes, ss is seconds, and ff is fractions of a second. The value of the Days property is the day component, d.
The following code example creates several TimeSpan objects and displays the Milliseconds property of each. See Example TimeSpan Properties
TimeSpan.Minutes Property
Gets the number of whole minutes represented by the current TimeSpan structure.
returnValue = object.Minutes
The minute component of the current TimeSpan structure. The return value ranges from -59 through 59.
A TimeSpan value can be represented as [-]d.hh:mm:ss.ff, where the optional
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minus sign indicates a negative time interval, the d component is days, hh is hours as measured on a 24-hour clock, mm is minutes, ss is seconds, and ff is fractions of a second. The value of the Minutes property is the minute component, mm.
The following code example creates several TimeSpan objects and displays the Minutes property of each. See Example TimeSpan Properties
TimeSpan.Seconds Property
Gets the number of whole seconds represented by the current TimeSpan structure.
returnValue = object.Seconds
The second component of the current TimeSpan structure. The return value ranges from -59 through 59.
A TimeSpan value can be represented as [-]d.hh:mm:ss.ff, where the optional
minus sign indicates a negative time interval, the d component is days, hh is hours as measured on a 24-hour clock, mm is minutes, ss is seconds, and ff is fractions of a second. The value of the Seconds property is the seconds component, ss.
The following code example creates several TimeSpan objects and displays the Seconds property of each. See Example TimeSpan Properties
TimeSpan.Ticks Property
Gets the number of ticks that represent the value of the current TimeSpan structure.
returnValue = object.Ticks
The number of ticks contained in this instance.
The smallest unit of time is the tick, which is equal to 100 nanoseconds. A tick can
be negative or positive.
The following code example creates several TimeSpan objects and displays the Ticks property of each. See Example TimeSpan Properties
TimeSpan.TotalDays Property
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Gets the value of the current TimeSpan structure expressed in whole and fractional days.
returnValue = object.TotalDays
The total number of days represented by this instance.
This property converts the value of this instance from ticks to days. This number
might include whole and fractional days
The following code example creates several TimeSpan objects and displays the TotalDays property of each. See Example TimeSpan Properties
TimeSpan.TotalHours Property
Gets the value of the current TimeSpan structure expressed in whole and fractional hours.
returnValue = object.TotalHours
The total number of hours represented by this instance.
This property converts the value of this instance from ticks to hours. This number
might include whole and fractional hours.
The following code example creates several TimeSpan objects and displays the TotalHours property of each. See Example TimeSpan Properties
TimeSpan.TotalMilliseconds Property
Gets the value of the current TimeSpan structure expressed in whole and fractional milliseconds.
returnValue = object.TotalMilliseconds
The total number of milliseconds represented by this instance.
This property converts the value of this instance from ticks to milliseconds. This
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number might include whole and fractional milliseconds..
The following code example creates several TimeSpan objects and displays the TotalMilliseconds property of each. See Example TimeSpan Properties
TimeSpan.TotalMinutes Property
Gets the value of the current TimeSpan structure expressed in whole and fractional minutes.
returnValue = object.TotalMinutes
The total number of minutes represented by this instance.
This property converts the value of this instance from ticks to minutes. This number
might include whole and fractional minutes.
The following code example creates several TimeSpan objects and displays the TotalMinutes property of each. See Example TimeSpan Properties
TimeSpan.TotalSeconds Property
Gets the value of the current TimeSpan structure expressed in whole and fractional seconds.
returnValue = object.TotalSeconds
The total number of seconds represented by this instance.
This property converts the value of this instance from ticks to seconds. This number
might include whole and fractional seconds..
The following code example creates several TimeSpan objects and displays the TotalSeconds property of each. See Example TimeSpan Properties
TimeSpan Methods
Name Description
Add Adds the specified TimeSpan to this instance.
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Compare Compares two TimeSpan values and returns an integer that indicates their relationship.
CompareTo Overloaded. Compares this instance to a specified object or TimeSpan and returns an indication of their relative values.
Duration Returns a new TimeSpan object whose value is the absolute value of the current TimeSpan object.
Equals Overloaded. Overridden. Returns a value indicating whether two instances of TimeSpan are equal.
FomDays Returns a TimeSpan that represents a specified number of days, where the specification is accurate to the nearest millisecond.
FromHours Returns a TimeSpan that represents a specified number of hours, where the specification is accurate to the nearest millisecond.
FromMillsecond Returns a TimeSpan that represents a specified number of milliseconds.
FromMinutes Returns a TimeSpan that represents a specified number of minutes, where the specification is accurate to the nearest millisecond.
FromSeconds Returns a TimeSpan that represents a specified number of seconds, where the specification is accurate to the nearest millisecond.
FromTicks Returns a TimeSpan that represents a specified time, where the specification is in units of ticks.
GetHashCode Overridden. Returns a hash code for this instance
GetType Gets the Type of the current instance
Negate Returns a TimeSpan whose value is the negated value of this instance.
op_Addition Adds two specified TimeSpan instances.
op_Equality Indicates whether two TimeSpan instances are equal.
op_GreaterThan Indicates whether a specified TimeSpan is greater than another specified TimeSpan.
op_GreaterThanOrEqual Indicates whether a specified TimeSpan is greater than or equal to another specified TimeSpan.
op_Inequality Indicates whether two TimeSpan instances are not equal.
op_LessThan Indicates whether a specified TimeSpan is less than another specified TimeSpan.
op_LessThanOrEqual Indicates whether a specified TimeSpan is less than or equal to another specified TimeSpan.
op_Subtraction Subtracts a specified TimeSpan from another specified TimeSpan.
op_UnaryNegation Returns a TimeSpan whose value is the negated value of the specified instance.
op_UnaryPlus Returns the specified instance of TimeSpan.
Parse Constructs a new TimeSpan object from a time interval specified in a string.
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Subtract Subtracts the specified TimeSpan from this instance.
ToString Overridden. Returns the string representation of the value of this instance.
TryParse Constructs a new TimeSpan object from a time interval specified in a string. Parameters specify the time interval and the variable where the new TimeSpan object is returned.
TimeSpan.Add ( TimeSpan ) Method
Adds the specified TimeSpan to this instance.
Set object = instance.Add( ts )
Parameter Description
ts A TimeSpan
A TimeSpan that represents the value of this instance plus the value of ts.
OverflowException - The resulting TimeSpan is less than MinValue or greater than
MaxValue.
The return value must be between MinValue and MaxValue; otherwise, an
exception is thrown.
The return value is a new TimeSpan; the original TimeSpan is not modified.
The following code example creates several pairs of TimeSpan objects and calculates their sum with the Add method.
Option Explicit
Dim tsL, tsR, int64_1, int64_2
Sub ShowTimeSpanSumDiff( ByRef tsLeft, ByRef tsRight )
Print vbCrLf &"TimeSpan Left : " & tsLeft
Print "TimeSpan Right : " & tsRight
Print "Left.Add( Right ) : " & tsLeft.Add( tsRight )
Print "Left.Subtract( Right ) : " & tsLeft.Subtract( tsRight )
End Sub
Print "This example of the TimeSpan.Add( ) and " & _
"TimeSpan.Subtract( ) " & vbCrLf & "methods " & _
"generates the following output by creating several " & _
vbCrLf & "pairs of TimeSpan objects and calculating " & _
"and displaying " & vbCrLf & "the sum " & _
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"and difference of each."
' ** Create pairs of TimeSpan objects.
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan", ,1, 20, 0 )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan", ,0, 45, 10 )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan", ,1, 10, 20, 30, 40 )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan", ,-1, 2, 3, 4, 5 )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan", ,182, 12, 30, 30, 505 )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan", ,182, 11, 29, 29, 495 )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set int64_1 = DotNetFactory.CreateInstance( _
"System.Int64" ).Parse( "888888888888888" )
Set int64_2= DotNetFactory.CreateInstance( _
"System.Int64" ).Parse( "999999999999999" )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan", , int64_1 )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan", , int64_2 )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set tsL = Nothing : Set tsR = Nothing
Set int64_1 = Nothing : Set int64_2 = Nothing
DateTime.Compare ( TimeSpan, TimeSpan ) Method
Compares two TimeSpan values and returns an integer that indicates their relationship.
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returnValue = instance.Compare( t1, t2 )
Parameter Description
t1 The first DateTime.
t2 The second DateTime.
A signed number indicating the relative values of t1 and t2
Less than zero - t1 is less than t2.
Zero - t1 equals t2
Greater than zero - t1 is greater than t2.
The following code example compares several TimeSpan objects to a reference TimeSpan using the Compare method.
Option Explicit
Dim ts, tsL, tsR, int64
' ** Compare TimeSpan parameters, and display them with the results.
Sub CompareTimeSpans( ByRef tsLeft, ByRef tsRight, ByVal RightText )
Dim sb
Print "Right : " & RightText & " ---> " & tsRight
Print "TimeSpan.Equals( Left, Right ) ---> " & ts.Equals( tsLeft, tsRight )
Print "TimeSpan.Compare( Left, Right ) ---> " & ts.Compare( tsLeft, tsRight )
End Sub
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan",,2, 0, 0 )
Print "This example of the TimeSpan.Equals( TimeSpan, " & _
"TimeSpan ) and " & vbCrLf & "TimeSpan.Compare( " & _
"TimeSpan, TimeSpan ) methods generates the " & vbCrLf & _
"following output by creating several " & _
"different TimeSpan " & vbCrLf & "objects and " & _
"comparing them with a 2-hour TimeSpan." & vbCrLf
Print vbNewLine
Print "Left: TimeSpan( 2, 0, 0 ) ---> " & tsL
' ** Create objects to compare with a 2-hour TimeSpan.
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 120, 0 )
Call CompareTimeSpans( tsL, tsR, "TimeSpan( 0, 120, 0 )" )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 2, 0, 1 )
Call CompareTimeSpans( tsL, tsR, "TimeSpan( 2, 0, 1 )" )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 2, 0, -1 )
Call CompareTimeSpans( tsL, tsR, "TimeSpan( 2, 0, -1 )" )
Set int64 = DotNetFactory.CreateInstance( "System.Int64" ).Parse( "72000000000" )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, int64 )
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Call CompareTimeSpans( tsL, tsR, "TimeSpan( 72000000000 )" )
Set int64 = Nothing
Set tsr = ts.FromDays( 1 / 12 )
Call CompareTimeSpans( tsL, tsR, "TimeSpan.FromDays( 1 / 12 )" )
Set ts = Nothing : Set tsL = Nothing : Set tsR = Nothing
TimeSpan.CompareTo ( TimeSpan ) Method
Compares this instance to a specified TimeSpan object and returns an indication of their relative values.
returnValue = instance.CompareTo( value )
Parameter Description
value A TimeSpan object to compare to this instance.
A signed number indicating the relative values of t1 and t2
Less than zero - t1 is less than t2.
Zero - t1 equals t2
Greater than zero - t1 is greater than t2.
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This method implements the System.IComparable interface and performs slightly
better than the TimeSpan.CompareTo method because it does not have to convert the value parameter to an object.
TimeSpan.Duration ( ) Method
Returns a new TimeSpan object whose value is the absolute value of the current TimeSpan object.
Set ts = instance.Duration()
A new TimeSpan whose value is the absolute value of the current TimeSpan
object. Example
OverflowException - The value of this instance is MinValue.
The following code example applies the Duration method to several TimeSpan objects.
Option Explicit
Dim ts, unaryTs
Sub ShowDurationNegate( Byref interval )
' ** Display the TimeSpan value and the results of the Duration and Negate
' methods.
Print "Interval ---> " & interval
Print "Interval.Duration ---> " & interval.Duration
Print "Interval.Negate ---> " & interval.Negate
End Sub
Print "This example of TimeSpan.Duration( ), " & _
"TimeSpan.Negate( ), " & vbCrLf & _
"and the TimeSpan Unary Negation and " & _
"Unary Plus operators " & vbCrLf & _
"generates the following output." & vbCrLf
' ** Create TimeSpan objects and apply the Unary Negation
' and Unary Plus operators to them.
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1 )
Call ShowDurationNegate( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, -1234567 )
Call ShowDurationNegate( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 0, 10, -20, -30 )
Set unaryTs = DotNetFactory.CreateInstance( "System.TimeSpan" ).op_UnaryPlus( ts )
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Call ShowDurationNegate( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, -10, 20, -30, 40 )
Set unaryTs = DotNetFactory.CreateInstance( "System.TimeSpan" ).op_UnaryPlus( ts )
Call ShowDurationNegate( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 10, 20, 40, 160 )
Set unaryTs = DotNetFactory.CreateInstance("System.TimeSpan").op_UnaryNegation( ts )
Call ShowDurationNegate( ts )
Set ts = DotNetFactory.CreateInstance("System.TimeSpan",, -10, -20, -30, -40, -50 )
Set unaryTs = DotNetFactory.CreateInstance("System.TimeSpan").op_UnaryNegation( ts )
Call ShowDurationNegate( ts )
Set ts = Nothing : Set unaryTs = Nothing
TimeSpan.Equals Method
Name Description
TimeSpan.Equals (TimeSpan) Returns a value indicating whether this instance is equal to a specified TimeSpan object.
TimeSpan.Equals (TimeSpan, TimeSpan)
Returns a value indicating whether two specified instances of TimeSpan are equal.
TimeSpan.Equals ( TimeSpan ) Method
Returns a value indicating whether two specified instances of TimeSpan are equal.
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returnValue = instance.Equals( obj )
Parameter Description
obj A TimeSpan object to compare with this instance.
true if obj represents the same time interval as this instance; otherwise, false.
This method implements the System.IEquatable interface, and performs slightly
better than Equals because it does not have to convert the the obj parameter to an object.
The following code example compares several TimeSpan objects to a reference TimeSpan using the Equals method. See Example Time Span Compare
TimeSpan.Equals ( TimeSpan, TimeSpan ) Method
Returns a value indicating whether two specified instances of TimeSpan are equal
returnValue = instance.Equals( t1, t2 )
Parameter Description
t1 A TimeSpan
t2 A TimeSpan
true if the values of t1 and t2 are equal; otherwise, false
The following code example compares several TimeSpan objects to a reference TimeSpan using the Equals method. See Example Time Span Compare
TimeSpan.FromDays ( Double ) Method
Returns a TimeSpan that represents a specified number of days, where the specification is accurate to the nearest millisecond.
Set ts = instance.fromDays( value )
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Parameter Description
value A number of days, accurate to the nearest millisecond.
TimeSpan that represents value
OverflowException - value is less than MinValue or greater than MaxValue.
ArgumentException - value is equal to Double.NaN.
The value parameter is converted to milliseconds, which is converted to ticks, and
that number of ticks is used to intialize the new TimeSpan. Therefore, value will only be considered accurate to the nearest millisecond.
If value is Double.PositiveInfinity, MaxValue is returned. If value is Double.NegativeInfinity, MinValue is returned.
The following code example creates several TimeSpan objects using the FromDays method.
Option Explicit
Dim ts
Sub GenTimeSpanFromDays( ByRef days )
Dim interval, timeInterval
' ** Create a TimeSpan object and TimeSpan string from a number of days.
Set interval = ts.FromDays( days )
timeInterval = interval.ToString( )
Print "days ---> " & days
Print "time Interval ---> " & timeInterval
Set interval = Nothing
End Sub
Print "This example of TimeSpan.FromDays( Double )" & vbCrLf & _
"generates the following output." & vbCrLf
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Call GenTimeSpanFromDays( 0.000000006 )
Call GenTimeSpanFromDays( 0.000000017 )
Call GenTimeSpanFromDays( 0.000123456 )
Call GenTimeSpanFromDays( 1.234567898 )
Call GenTimeSpanFromDays( 12345.678987654 )
Call GenTimeSpanFromDays( 0.000011574 )
Call GenTimeSpanFromDays( 0.000694444 )
Call GenTimeSpanFromDays( 0.041666666 )
Call GenTimeSpanFromDays( 1 )
Call GenTimeSpanFromDays( 20.84745602 )
Set ts = Nothing
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TimeSpan.FromHours ( Double ) Method
Returns a TimeSpan that represents a specified number of hours, where the specification is accurate to the nearest millisecond.
Set ts = instance.fromHours( value )
Parameter Description
value A number of hours accurate to the nearest millisecond.
A TimeSpan that represents value
OverflowException - value is less than MinValue or greater than MaxValue.
ArgumentException - value is equal to Double.NaN.
The value parameter is converted to milliseconds, which is converted to ticks, and
that number of ticks is used to intialize the new TimeSpan. Therefore, value will only be considered accurate to the nearest millisecond.
If value is Double.PositiveInfinity, MaxValue is returned. If value is
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Double.NegativeInfinity, MinValue is returned.
The following code example creates several TimeSpan objects using the FromHours method.
Option Explicit
Dim ts
Sub GenTimeSpanFromHours( ByRef hours )
Dim interval, timeInterval
' ** Create a TimeSpan object and TimeSpan string from a number of hours.
Set interval = ts.FromHours( hours )
timeInterval = interval.ToString( )
Print "hours ---> " & hours
Print "time Interval ---> " & timeInterval
Set interval = Nothing
End Sub
Print "This example of TimeSpan.FromHours( Double )" & _
vbCrLf & "generates the following output." & vbCrLf
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Call GenTimeSpanFromHours ( 0.0000002 )
Call GenTimeSpanFromHours ( 0.0000003 )
Call GenTimeSpanFromHours ( 0.0012345 )
Call GenTimeSpanFromHours ( 12.3456789 )
Call GenTimeSpanFromHours ( 123456.7898765 )
Call GenTimeSpanFromHours ( 0.0002777 )
Call GenTimeSpanFromHours ( 0.0166666 )
Call GenTimeSpanFromHours ( 1 )
Call GenTimeSpanFromHours ( 24 )
Call GenTimeSpanFromHours( 500.3389445 )
Set ts = Nothing
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TimeSpan.FromMilliseconds ( Double ) Method
Returns a TimeSpan that represents a specified number of milliseconds.
Set ts = instance.fromMilliseconds( value )
Parameter Description
value A number of milliseconds.
A TimeSpan that represents value
OverflowException - value is less than MinValue or greater than MaxValue.
ArgumentException - value is equal to Double.NaN.
The value parameter is converted to milliseconds, which is converted to ticks, and
that number of ticks is used to intialize the new TimeSpan. Therefore, value will only be considered accurate to the nearest millisecond.
If value is Double.PositiveInfinity, MaxValue is returned. If value is Double.NegativeInfinity, MinValue is returned.
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The following code example creates several TimeSpan objects using the FromHours method.
Option Explicit
Dim ts
Sub GenTimeSpanFromMillisec( ByRef millisec )
Dim interval, timeInterval
' ** Create a TimeSpan object and TimeSpan string from a number of millisecs.
Set interval = ts.FromMilliseconds( millisec )
timeInterval = interval.ToString( )
Print "milliseconds ---> " & millisec
Print "time Interval ---> " & timeInterval
Set interval = Nothing
End Sub
Print "This example of TimeSpan.FromMilliseconds ( Double )" & _
vbCrLf & "generates the following output." & vbCrLf
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Call GenTimeSpanFromMillisec ( 1 )
Call GenTimeSpanFromMillisec ( 1.5 )
Call GenTimeSpanFromMillisec ( 12345.6 )
Call GenTimeSpanFromMillisec ( 123456789.8 )
Call GenTimeSpanFromMillisec ( 1234567898765.4 )
Call GenTimeSpanFromMillisec ( 1000 )
Call GenTimeSpanFromMillisec ( 60000 )
Call GenTimeSpanFromMillisec ( 3600000 )
Call GenTimeSpanFromMillisec ( 86400000 )
Call GenTimeSpanFromMillisec ( 1801220200 )
Set ts = Nothing
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TimeSpan.FromMinutes ( Double ) Method
Returns a TimeSpan that represents a specified number of minutes, where the specification is accurate to the nearest millisecond.
Set ts = instance.FromMinutes( value )
Parameter Description
value A number of minutes, accurate to the nearest millisecond.
A TimeSpan that represents value.
OverflowException - value is less than MinValue or greater than MaxValue.
ArgumentException - value is equal to Double.NaN.
The value parameter is converted to milliseconds, which is converted to ticks, and
that number of ticks is used to intialize the new TimeSpan. Therefore, value will only be considered accurate to the nearest millisecond.
If value is Double.PositiveInfinity, MaxValue is returned. If value is
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Double.NegativeInfinity, MinValue is returned.
TimeSpan.FromSeconds ( Double ) Method
Returns a TimeSpan that represents a specified number of seconds, where the specification is accurate to the nearest millisecond.
Set ts = instance.FromSeconds( value )
Parameter Description
value A number of seconds, accurate to the nearest millisecond.
A TimeSpan that represents value.
OverflowException - value is less than MinValue or greater than MaxValue.
ArgumentException - value is equal to Double.NaN.
The value parameter is converted to milliseconds, which is converted to ticks, and
that number of ticks is used to intialize the new TimeSpan. Therefore, value will only be considered accurate to the nearest millisecond.
If value is Double.PositiveInfinity, MaxValue is returned. If value is Double.NegativeInfinity, MinValue is returned.
The following code example creates several TimeSpan objects using the FromHours method.
Option Explicit
Dim ts
Sub GenTimeSpanFromSeconds( ByRef seconds )
Dim interval, timeInterval
' ** Create a TimeSpan object and TimeSpan string from a number of seconds.
Set interval = ts.FromSeconds( seconds )
timeInterval = interval.ToString( )
Print " seconds ---> " & seconds
Print "time Interval ---> " & timeInterval
Set interval = Nothing
End Sub
Print "This example of TimeSpan.FromMinutes ( Double )" & _
vbCrLf & "generates the following output." & vbCrLf
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Call GenTimeSpanFromSeconds ( 0.001 )
Call GenTimeSpanFromSeconds ( 0.0015 )
Call GenTimeSpanFromSeconds ( 12.3456 )
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Call GenTimeSpanFromSeconds ( 123456.7898 )
Call GenTimeSpanFromSeconds ( 1234567898.7654 )
Call GenTimeSpanFromSeconds ( 1 )
Call GenTimeSpanFromSeconds ( 60 )
Call GenTimeSpanFromSeconds ( 3600 )
Call GenTimeSpanFromSeconds ( 86400 )
Call GenTimeSpanFromSeconds ( 1801220.2 )
Set ts = Nothing
TimeSpan.FromTicks ( Long ) Method
Returns a TimeSpan that represents a specified time, where the specification is in units of ticks.
Set ts = instance.FromTicks( value )
Parameter Description
value A number of ticks that represent a time.
A TimeSpan that represents value.
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This is a convenience method with the same behavior as the TimeSpan constructor.
TimeSpan.GetHashCode ( ) Method
Returns a TimeSpan that represents a specified time, where the specification is in units of ticks.
returnValue = instance.GetHashCode()
A 32-bit signed integer hash code.
Two TimeSpan objects might have the same hash code even though they represent
different time values.
The following code example generates the hash codes of several TimeSpan objects using the GetHashCode method.
Option Explicit
Dim ts, int64
Sub DisplayHashCode( ByRef interval )
Dim timeInterval, hashCode
' ** Create a hash code and a string representation of the TimeSpan parameter.
timeInterval= interval.ToString( )
hashCode = interval.GetHashCode( )
Print "Interval = " & timeInterval & _
"; hash code = " & Hex( hashCode ) & _
" (" & hashCode & ")"
End Sub
Print "This example of TimeSpan.GetHashCode( ) generates " & _
"the following " & vbCrLf & "output, which displays " & _
"the hash codes of representative TimeSpan " & vbCrLf & _
"objects in hexadecimal and decimal formats." & vbCrLf
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 0 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 0, 0, 0, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 0, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 1, 0 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 0, 0 )
Call DisplayHashCode( ts )
Set int64 = DotNetFactory.CreateInstance( "System.Int64" ).Parse( "36000000001" )
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Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, int64 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 1, 0, 0, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 0, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 0, 0, 0 )
Call DisplayHashCode( ts )
Set int64 = DotNetFactory.CreateInstance( "System.Int64" ).Parse( "864000000001" )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, int64 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 0, 0, 0, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 0, 0, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 100, 0, 0, 0 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 100, 0, 0, 0, 1 )
Call DisplayHashCode( ts )
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan",, 00, 0, 0, 1 )
Call DisplayHashCode( ts )
Set ts = Nothing
TimeSpan.Negate ( ) Method
Returns a TimeSpan whose value is the negated value of this instance.
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returnValue = instance.GetHashCode()
The same numeric value as this instance, but with the opposite sign.
Two TimeSpan objects might have the same hash code even though they represent
different time values.
OverflowException - The negated value of this instance cannot be represented by a
TimeSpan; that is, the value of this instance is MinValue.
TimeSpan.op_Addition ( TimeSpan, TimeSpan ) Method
Adds two specified TimeSpan instances.
Set ts = instance.op_Addition( t1, t2 )
Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
A TimeSpan whose value is the sum of the values of t1 and t2.
OverflowException - The resulting TimeSpan is less than MinValue or greater than
MaxValue.
The following code example creates several pairs of TimeSpan objects and calculates their sum with the Addition operator.
Option Explicit
Dim ts, tsL, tsR, int64L, int64R
' ** Display TimeSpan parameters and their sum and difference.
Private Sub ShowTimeSpanSumDiff( ByRef tsLeft, ByRef tsRight )
Print "TimeSpan Left : " & tsLeft.ToString()
Print "TimeSpan Right : " & tsRight.ToString()
Print "TimeSpan.op_Addition( Left, Right )" & ts.op_Addition( tsLeft, tsRight )
Print "TimeSpan.op_Subtraction( Left, Right )" & ts.op_Subtraction( tsLeft, tsRight )
Print String( 50, "*" )
End Sub
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Print "This example of the TimeSpan Addition and " & _
"Subtraction " & vbCrLf & "operators " & _
"generates the following output by creating " & vbCrLf & _
"several pairs of TimeSpan objects and calculating " & _
"and " & vbCrLf & "displaying the sum " & _
"and difference of each." & vbCrLf
' ** Create pairs of TimeSpan objects.
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 20, 0 )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 45, 10 )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan",, 1, 10, 20, 30, 40 )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, -1, 2, 3, 4, 5 )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan",, 182, 12, 30, 30, 505 )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 182, 11, 29, 29, 495 )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set int64L = DotNetFactory.CreateInstance("System.Int64").Parse( "888888888888888" )
Set int64R = DotNetFactory.CreateInstance("System.Int64").Parse( "999999999999999" )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan",, int64L )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, int64R )
Call ShowTimeSpanSumDiff( tsL, tsR )
Set int64L = Nothing : Set int64R = Nothing
Set tsL = Nothing : Set tsR = Nothing
Set ts = Nothing
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TimeSpan.op_Equality ( TimeSpan, TimeSpan ) Method
Indicates whether two TimeSpan instances are equal
returnValue = instance.op_Equality( t1, t2 )
Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
true if the values of t1 and t2 are equal; otherwise, false.
The following code example compares several TimeSpan objects to a reference TimeSpan using the Equality operator.
Option Explicit
Dim ts, tsL, tsR
' ** Compare TimeSpan parameters, and display them with the results.
Sub CompareTimeSpans( ByRef tsLeft, ByRef tsRight, ByVal sText )
Print String( 50, "*" )
Print sText & " ---> Right : " & tsRight.ToString()
Print "TimeSpan.op_Equality( Left, Right ) ---> " & ts.op_Equality( tsLeft, tsRight )
Print "TimeSpan.op_GreaterThan( Left, Right ) ---> " & ts.op_GreaterThan( tsLeft, tsRight )
Print "TimeSpan.op_GreaterThanOrEqual( Left, Right ) ---> " & ts.op_GreaterThanOrEqual( tsLeft, tsRight )
Print "TimeSpan.op_Inequality( Left, Right ) ---> " & ts.op_Inequality( tsLeft, tsRight )
Print "TimeSpan.op_LessThan( Left, Right ) ---> " & ts.op_LessThan( tsLeft, tsRight )
Print "TimeSpan.op_LessThanOrEqual( Left, Right ) ---> " & ts.op_LessThanOrEqual( tsLeft, tsRight )
End Sub
Print "This example of the TimeSpan relational operators " & _
"generates " & vbCrLf & "the following output. It " & _
"creates several different TimeSpan " & vbCrLf & _
"objects and compares them with a 2-hour TimeSpan." & vbCrLf
' ** Create Main TimeSpan object
Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Set tsL = DotNetFactory.CreateInstance( "System.TimeSpan",, 2, 0, 0 )
' ** Create objects to compare with a 2-hour TimeSpan.
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Print "Left : TimeSpan( 2, 0, 0 ) ---> " & tsL
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 0, 120, 0 )
Call CompareTimeSpans( tsL, tsr, "TimeSpan( 0, 120, 0 )" )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 2, 0, 1 )
Call CompareTimeSpans( tsL, tsr, "TimeSpan( 2, 0, 1 )" )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan",, 2, 0, -1 )
Call CompareTimeSpans( tsL, tsr, "TimeSpan( 2, 0, -1 )" )
Set tsR = DotNetFactory.CreateInstance( "System.TimeSpan" ).FromDays( 1 / 12 )
Call CompareTimeSpans( tsL, tsr, "TimeSpan.FromDays( 1 / 12 )" )
Set tsL = Nothing : Set tsR = Nothing
Set ts = Nothing
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TimeSpan.op_GreaterThan ( TimeSpan, TimeSpan ) Method
Indicates whether a specified TimeSpan is greater than another specified TimeSpan.
returnValue = instance.op_GreaterThan( t1, t2 )
Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
true if the value of t1 is greater than the value of t2; otherwise, false.
The following code example compares several TimeSpan objects to a reference TimeSpan using the GreaterThan operator. See TimeSpan.op_Equality Example
TimeSpan.op_GreaterThanOrEqual ( TimeSpan, TimeSpan ) Method
Indicates whether a specified TimeSpan is greater than or equal to another specified TimeSpan.
returnValue = instance.op_GreaterThanOrEqual( t1, t2 )
Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
true if the value of t1 is greater than or equal to the value of t2; otherwise, false.
The following code example compares several TimeSpan objects to a reference TimeSpan using the GreaterThanOrEqual operator. See TimeSpan.op_Equality Example
TimeSpan.op_Inequality ( TimeSpan, TimeSpan ) Method
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Indicates whether two TimeSpan instances are not equal.
returnValue = instance.op_Inequality( t1, t2 )
Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
true if the values of t1 and t2 are not equal; otherwise, false.
The following code example compares several TimeSpan objects to a reference TimeSpan using the Inequality operator. See TimeSpan.op_Equality Example
TimeSpan.op_LessThan ( TimeSpan, TimeSpan ) Method
Indicates whether a specified TimeSpan is less than another specified TimeSpan.
returnValue = instance.op_LessThan( t1, t2 )
Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
true if the value of t1 is less than the value of t2; otherwise, false.
The following code example compares several TimeSpan objects to a reference TimeSpan using the LessThan operator. See TimeSpan.op_Equality Example
TimeSpan.op_LessThanOrEqual ( TimeSpan, TimeSpan ) Method
Indicates whether a specified TimeSpan is less than or equal to another specified TimeSpan.
returnValue = instance.op_LessThanOrequal( t1, t2 )
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Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
true if the value of t1 is less than or equal to the value of t2; otherwise, false.
The following code example compares several TimeSpan objects to a reference TimeSpan using the LessThanOrEqual operator. See TimeSpan.op_Equality Example
TimeSpan.op_Subtraction ( TimeSpan, TimeSpan ) Method
Subtracts a specified TimeSpan from another specified TimeSpan.
Set ts = instance.op_Subtraction( t1, t2 )
Parameter Description
t1 A TimeSpan.
t2 A TimeSpan.
A TimeSpan whose value is the result of the value of t1 minus the value of t2.
OverflowException - The resulting TimeSpan is less than MinValue or greater than
MaxValue.
The following code example creates several pairs of TimeSpan objects and calculates their difference with the Subtraction operator. See TimeSpan.op_Addition Example
TimeSpan.op_UnaryNegation ( ) Method
Returns a TimeSpan whose value is the negated value of the specified instance.
Set ts = instance.op_UnaryNegation( t )
Parameter Description
t A TimeSpan
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A TimeSpan with the same numeric value as this instance, but the opposite sign.
OverflowException - The negated value of this instance cannot be represented by a
TimeSpan; that is, the value of this instance is MinValue.
The following code example applies the op_UnaryNegation method to several TimeSpan objects. See TimeSpan.Duration Method Example
TimeSpan.op_UnaryPlus ( ) Method
Returns the specified instance of TimeSpan.
Set ts = instance.op_UnaryPlus( t )
Parameter Description
t A TimeSpan
Returns t.
The following code example applies the op_UnaryNegation method to several TimeSpan objects. See TimeSpan.Duration Method Example
TimeSpan.Parse ( String ) Method
Constructs a new TimeSpan object from a time interval specified in a string.
Set ts = instance.Parse( s )
Parameter Description
s A string that specifies a time interval.
A TimeSpan that corresponds to s.
ArgumentNullException - s is a null reference (Nothing in Visual Basic).
FormatException - s has an invalid format.
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OverflowException
s represents a number less than MinValue or greater than MaxValue
At least one of the days, hours, minutes, or seconds components is outside its valid range.
The s parameter contains a time interval specification of the form:
[ws][-]{ d | [d.]hh:mm[:ss[.ff]] }[ws]
Items in square brackets ([ and ]) are optional; one selection from the list of alternatives enclosed in braces ({ and }) and separated by vertical bars (|) is required; colons and periods (: and .) are literal characters and required; other items are as follows
Item Description
ws optional white space
"-" optional minus sign indicating a negative TimeSpan
d days, ranging from 0 to 10675199
hh hours, ranging from 0 to 23
mm minutes, ranging from 0 to 59
ss optional seconds, ranging from 0 to 59
ff optional fractional seconds, consisting of 1 to 7 decimal digits
The components of s must collectively specify a time interval greater than or equal to MinValue and less than or equal to MaxValue
The following code example uses the Parse method to create TimeSpan objects from valid TimeSpan strings and to raise exceptions from invalid TimeSpan strings.
Option Explicit
Dim ts
Private Sub ParseNDisplayTimeSpan( ByRef intervalStr )
Dim intervalVal, intervalToStr
On Error Resume Next
' ** Write the first part of the output line.
' ** Parse the parameter, and then convert it back to a string.
Set intervalVal = ts.Parse( intervalStr )
If Err.Number <> 0 Then
Print Err.Description
Exit Sub
End If
intervalToStr = intervalVal.ToString( )
Print "String to Parse ---> " & intervalStr & _
" TimeSpan or Exception ---> " & intervalToStr
End Sub
Print "This example of TimeSpan.Parse( String ) and " & _
vbCrLf & "TimeSpan.ToString( ) " & _
"generates the following output." & vbCrLf
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Set ts = DotNetFactory.CreateInstance( "System.TimeSpan" )
Call ParseNDisplayTimeSpan( "0" )
Call ParseNDisplayTimeSpan( "14" )
Call ParseNDisplayTimeSpan( "1:2:3" )
Call ParseNDisplayTimeSpan( "0:0:0.250" )
Call ParseNDisplayTimeSpan( "10.20:30:40.50" )
Call ParseNDisplayTimeSpan( "99.23:59:59.9999999" )
Call ParseNDisplayTimeSpan( "0023:0059:0059.0099" )
Call ParseNDisplayTimeSpan( "24:0:0" )
Call ParseNDisplayTimeSpan( "0:60:0" )
Call ParseNDisplayTimeSpan( "0:0:60" )
Call ParseNDisplayTimeSpan( "10:" )
Call ParseNDisplayTimeSpan( ":10" )
Call ParseNDisplayTimeSpan( "10:20:" )
Call ParseNDisplayTimeSpan( ".123" )
Call ParseNDisplayTimeSpan( "10." )
Call ParseNDisplayTimeSpan( "10.12" )
Set ts = Nothing
TimeSpan.Subtract ( TimeSpan ) Method
Subtracts the specified TimeSpan from this instance.
Set object = instance.Subtract( ts )
Parameter Description
ts A TimeSpan
A TimeSpan.
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OverflowException - The return value TimeSpan is less than MinValue or greater than MaxValue.
The return value must be between MinValue and MaxValue; otherwise, an
exception is thrown.
The return value is a new TimeSpan; the original TimeSpan is not modified.
The following code example creates several pairs of TimeSpan objects and calculates their difference with the Subtract method. See Example TimeSpan Subtract and Add Methods
TimeSpan.ToString ( String ) Method
Returns the string representation of the value of this instance.
returnValue = instance.ToString( )
A string that represents the value of this instance.
The return value is of the form: [-][d.]hh:mm:ss[.ff] Items in square brackets ([ and ]) are optional, colons and periods (: and.) are literal characters; and the other items are as follows.
Item Description
ws optional white space
"-" optional minus sign indicating a negative TimeSpan
d days, ranging from 0 to 10675199
hh hours, ranging from 0 to 23
mm minutes, ranging from 0 to 59
ss optional seconds, ranging from 0 to 59
ff optional fractional seconds, consisting of 1 to 7 decimal digits
For more information about comparing the string representation of TimeSpan and
Oracle data types, see article Q324577, "System.TimeSpan Does Not Match Oracle 9i INTERVAL DAY TO SECOND Data Type," in the Microsoft Knowledge Base at http://support.microsoft.com.
The return value of this method can be consumed by Parse.
TimeSpan.TryParse ( String, TimeSpan ) Method
Constructs a new TimeSpan object from a time interval specified in a string. Parameters
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specify the time interval and the variable where the new TimeSpan object is returned.
returnValue = instance.TryParse( s, Byref result )
Parameter Description
s A string that specifies a time interval.
result When this method returns, contains an object that represents the time interval specified by s, or Zero if the conversion failed. This parameter is passed uninitialized.
true if s was converted successfully; otherwise, false. This operation returns false if
the s parameter is a null reference (Nothing in Visual Basic), has an invalid format,represents a time interval less than MinValue or greater than MaxValue, or has at least one days, hours, minutes, or seconds component outside its valid range.
The TryParse method is like the TimeSpan.Parse method, except the TryParse method
does not throw an exception if the conversion fails.
The s parameter contains a time interval specification of the form:
[ws][-]{ d | d.hh:mm[:ss[.ff]] | hh:mm[:ss[.ff]] }[ws]
The TryParse method is like the TimeSpan.Parse method, except the TryParse method does not throw an exception if the conversion fails.
Items in square brackets ([ and ]) are optional. One selection from the list of alternatives enclosed in braces ({ and }) and separated by vertical bars (|) is required. Colons and periods (: and .) are literal characters and required. Other items are as follows.
Item Description
ws optional white space
"-" optional minus sign indicating a negative TimeSpan
d days, ranging from 0 to 10675199
hh hours, ranging from 0 to 23
mm minutes, ranging from 0 to 59
ss optional seconds, ranging from 0 to 59
ff optional fractional seconds, consisting of 1 to 7 decimal digits
The components of s must collectively specify a time interval greater than or equal to MinValue and less than or equal to MaxValue.
DotNetFactory Tasks
World Calendars
The Following code displays the different world calendars using the DOT.NET Calendars objects, CultutreInfo and more.
Notice to the usage of the dictionary; the dictionary holds a class for every entry.
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Option Explicit
Const CULTURE_INFO = "System.Globalization.CultureInfo"
Dim calendarsArr, cultureArr, today
Dim nCal, calName
Dim nDay, nMonth, nYear
Dim calDict
Class CalendarInfo
Private m_calendar, m_culture
Private m_ciName, m_calName
' ** Class private events Private Sub Class_Initialize()
Set m_calendar = Nothing : Set m_culture = Nothing
End Sub
Private Sub Class_Terminate()
Set m_calendar = Nothing : Set m_culture = Nothing
End Sub
' ** System.Globalization.CultureInfo
Public Property Get CultureInfo()
Set CultureInfo = m_culture
End Property
' ** System.Globalization.Calendar
Public Property Get Calendar()
Set Calendar = m_calendar
End Property
Public Property Let CalendarName( ByVal value )
m_calName = value
Set m_calendar = DotNetFactory.CreateInstance( _
"System.Globalization." & m_calName )
End Property
Public Property Get CalendarName()
CalendarName = m_calName
End Property
Public Property Let CultureName( ByVal value )
m_ciName = value
Set m_culture = DotNetFactory.CreateInstance( _
CULTURE_INFO, "System", m_ciName, True )
Set m_culture.DateTimeFormat.Calendar = m_calendar
End Property
Public Property Get CultureName()
CultureName = m_ciName
End Property
Public Function GetMonthNames( ByVal nYear )
Dim i, outStr
For i = 1 To m_calendar.GetMonthsInYear( nYear ) - 1
outStr = outStr & _
m_culture.DateTimeFormat.MonthNames.GetValue( CInt( i ) ) & ", "
Next
GetMonthNames = outStr
End Function
Public Function GetAbbrMonthNames( ByVal nYear )
Dim i, outStr
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For i = 1 To m_calendar.GetMonthsInYear( nYear ) - 1
outStr = outStr & _
m_culture.DateTimeFormat.AbbreviatedMonthNames.GetValue( CInt( i ) ) & ", "
Next
GetAbbrMonthNames = outStr
End Function
Public Function GetDaysInMonth( ByVal nYear )
Dim i, outStr
For i = 1 To m_calendar.GetMonthsInYear( nYear )
outStr = outStr & m_calendar.GetDaysInMonth( nYear, Clng( i ) ) & ", "
Next
GetDaysInMonth = outStr
End Function
End Class
Set today = DotNetFactory.CreateInstance( "System.DateTime" ).Today
Set calDict = CreateObject( "Scripting.Dictionary" )
calendarsArr = Array( "GregorianCalendar", "HebrewCalendar", "HijriCalendar", _
"JapaneseCalendar", "KoreanCalendar", "TaiwanCalendar", _
"PersianCalendar", "ThaiBuddhistCalendar", "JulianCalendar", _
"KoreanLunisolarCalendar", "UmAlQuraCalendar" )
cultureArr = Array ( "en-US", "he-IL", "ar-SA", "ja-JP", "ko-KR", "zh-TW", _
vbNullString, vbNullString, vbNullString, vbNullString, _
vbNullString )
' ** Building dictionary
For nCal = LBound( calendarsArr ) To UBound( calendarsArr )
calName = calendarsArr( nCal )
calDict.Add calendarsArr( nCal ), New CalendarInfo
calDict( calName ).CalendarName = calName
' ** Not all calendars are supported by cultureInfo
If StrComp( cultureArr( nCal ), vbNullString ) <> 0 Then
calDict( calName ).CultureName = cultureArr( nCal )
End If
nYear = Clng( calDict( calName ).Calendar.GetYear( today ) )
Print calDict( calName ).Calendar.GetType() & " Current Year : " & nYear
Print "Algorithm Type: " & calDict( calName ).Calendar.AlgorithmType
Print "MonthsInYear: " & calDict(calName).Calendar.GetMonthsInYear( Clng( nYear ) )
Print "DaysInYear: " & calDict( calName ).Calendar.GetDaysInYear( Clng( nYear ) )
Print "GetDaysInMonth: "
Print calDict( calName ).GetDaysInMonth( nYear )
If Not calDict( calName ).CultureInfo Is Nothing Then
Print "NativeCalendarName: " & _
calDict( calName ).CultureInfo.DateTimeFormat.NativeCalendarName
Print "MonthNames: " & calDict( calName ).GetMonthNames( nYear )
Print "AbbreviatedMonthNames: " & calDict(calName).GetAbbrMonthNames(nYear)
End If
nMonth = calDict( calName ).Calendar.GetMonth( today )
nDay = calDict( calName ).Calendar.GetDayOfMonth( today )
Print "IsLeapDay: " & calDict( calName ).Calendar.IsLeapDay( _
nYear , Clng( nMonth ), Clng( nDay ) )
Print "IsLeapMonth: " & _
calDict( calName ).Calendar.IsLeapMonth( nYear, Clng( nMonth ) )
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Print "IsLeapYear: " & calDict( calName ).Calendar.IsLeapYear( nYear )
Print String( 70, "=" )
Next
Set today = Nothing : Set calDict = Nothing
System.Collections.ArrayList
Option Explicit
Dim ArrayList, i, nItem
Private Sub PrintArray( ByRef arrayList, ByVal msg )
Dim outStr, Enumerator
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Set Enumerator = arrayList.GetEnumerator()
Do While Enumerator.MoveNext()
outStr = outStr & ", " & Enumerator.Current.ToString()
Loop
outStr = Mid( outStr, 2 )
Print msg & " ---> " & outStr
Set Enumerator = Nothing
End Sub
Set ArrayList = DotNetFactory.CreateInstance( "System.Collections.ArrayList",, 15 )
For i = 1 To 10
nItem = RandomNumber( 1, 100 )
ArrayList.Add nItem
Next
Print "ArrayList.ToString : " & ArrayList.ToString
Print "Array Properties"
Print String( 18, "*" )
Print "ArrayList.Count : " & ArrayList.Count
Print "ArrayList.Capacity : " & ArrayList.Capacity
Print "ArrayList.IsFixedSize : " & ArrayList.IsFixedSize
Print "ArrayList.IsReadOnly : " & ArrayList.IsReadOnly
Print "ArrayList.IsSynchronized : " & ArrayList.IsSynchronized
Call PrintArray( ArrayList, "Random Array" )
ArrayList.Sort
Call PrintArray( ArrayList, "Sorted Array" )
Print "Contains 33? ---> " & ArrayList.Contains( 33 )
Print "Contains " & nItem & "? ---> " & ArrayList.Contains( nItem )
Print "IndexOf " & nItem & " ---> " & ArrayList.IndexOf( nItem )
ArrayList.Add 11
Call PrintArray( ArrayList, "After added '11'" )
ArrayList.RemoveAt 3
Call PrintArray( ArrayList, "After removed index '3'" )
ArrayList.TrimToSize
Print "After TrimToSize, ArrayList.Capacity : " & ArrayList.Capacity
ArrayList.Reverse
Call PrintArray( ArrayList, "Reverse Array" )
Set ArrayList = Nothing
CallChain using System.Collections.Stack
In WinRunner the feature Call Chain gave the developer the capability to track function calling in the program flow. Every moment you could see wich function was called by another function. This can help a lot, when debugging complex scripts. Unfortunately QTP does not support this great built-in mechanism ( till version 9.2 ). Alternatively you can build and handle a CallChain of your own using a stack ( the same method is used by the operating system )
Option Explicit
Dim CallChain ' Can be used as a Global variable
Set CallChain = DotNetFactory.CreateInstance( "System.Collections.Stack" )
Private Function Func1()
CallChain.Push( Environment( "ActionName" ) & "::Func1" )
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Call Func2()
Call Sub3()
CallChain.Pop
End Function
Private Function Func2()
CallChain.Push( Environment( "ActionName" ) & "::Func2" )
Call Func4()
CallChain.Pop
End Function
Private Sub Sub3()
CallChain.Push( Environment( "ActionName" ) & "::Sub3")
' ** Do Something
CallChain.Pop
End Sub
Private Function Func4()
CallChain.Push( Environment( "ActionName" ) & "::Func4" )
' ** Do Something
CallChain.Pop
End Function
Public Sub ReportCallChain( ByVal saveToFile )
Dim ie, clone, dtStr
Set ie = Createobject( "InternetExplorer.Application" )
ie.Visible = 1
Do While ie.Busy
Wait 0, 500
ie.StatusText = "Waiting for Report..."
Loop
ie.Navigate "about:blank"
ie.ToolBar = 0 : ie.AddressBar= 0 : ie.StatusBar = 0 : ie.MenuBar = 0
ie.Width = 500 : ie.Height = 600 : ie.Left = 0 : ie.Top = 0
dtStr = DotNetFactory.CreateInstance( "System.DateTime" ).Now.ToString( "F" )
With ie.document
.Writeln "<H1 align='left'><u>Call Chain Report</u></H1>"
.Writeln "<H3 align='left'>" & dtStr & "</H3>"
.Writeln "<html><head><title>Service Status</title></head>"
.Writeln "<body bgcolor='ivory'>"
.Writeln "<table width='100%'>"
.Writeln "<tr><td width='50%'><b>Function call stack:</b></td></tr>"
Set clone = CallChain.Clone
Do While clone.Count > 0
.Writeln "</tr><td width='50%'>" & clone.Pop() & "</td></tr>"
Loop
Set clone = Nothing
.Writeln "</table></body></html>" : .Write()
If IsEmpty( saveToFile ) Then Exit Sub
.execCommand "saveas", True, saveToFile
End With
End Sub
' ** Script Starts ...
Call Func1()
How it Works : Put a Breakpoint anywhere inside Func1, Func2, Sub3 or Func4. When the script gets to the breakpoint, display the Debug Viewer Window, Select the
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Command Tab and Type ReportCallChain Empty Then press enter and see what happens... Try again Typing ReportCallChain "C:\MyReport.html" You can add the ReportCallChain function to an associated library.
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VisualBasic Functions
Option Explicit
Dim Dim vbi, vbs
Dim response
Print "Format Function"
Set vbs = DotNetFactory.CreateInstance( "Microsoft.VisualBasic.Strings" )
Print "##,##0.00 ---> " & vbs.Format( 5459.4, "##,##0.00" )
Print "###0.00 ---> " & vbs.Format( 334.9, "###0.00" )
Print "0.00% ---> " & vbs.Format( 5, "0.00%" )
Print "$#,##0;;\Z\e\r\o ---> " & vbs.Format( 0, "$#,##0;;\Z\e\r\o" )
Print "$#,##0;;\Z\e\r\o ---> " & vbs.Format( 1, "$#,##0;;\Z\e\r\o" )
Print "$#,##0;;\Z\e\r\o ---> " & vbs.Format( -1, "$#,##0;;\Z\e\r\o" )
Print "$#,##0;($#,##0) ---> " & vbs.Format( 1000, "$#,##0;($#,##0)" )
Print "$#,##0;($#,##0) ---> " & vbs.Format( -500, "$#,##0;($#,##0)" )
Print "0" & vbs.Format( 5, "0" )
Print "0" & vbs.Format( 0.5, "0" )
Print "0.00" & vbs.Format( 5, "0.00" )
Print "0.00" & vbs.Format( 0.5, "0.00" )
Print "0.00E+00 ---> " & vbs.Format( 5, "0.00E+00" )
Print "0.00E+00 ---> " & vbs.Format( 0.5, "0.00E+00")
Print "0.00E+00 ---> " & vbs.Format( -5, "0.00E+00" )
Print "0.00E-00 ---> " & vbs.Format( 5, "0.00E-00")
Print "0.00E-00 ---> " & vbs.Format( 0.5, "0.00E-00" )
Print "0.00E-00 ---> " & vbs.Format( -5, "0.00E-00" )
Print "Yes/No ---> " & vbs.Format( True, "Yes/No" )
Print "On/Off ---> " & vbs.Format( False, "On/Off" )
Print "X ---> " & vbs.Format( 567346, "X" )
Print "x ---> " & vbs.Format( 567346, "x" )
Print "#e+# ---> " & vbs.Format( 12345678, "#e+#" )
Print "; ---> " & vbs.Format( -1, ";" )
Print "g ---> " & vbs.Format( 0.324532, "g" )
Print "G ---> " & vbs.Format( 32453.2, "G" )
Print "F ---> " & vbs.Format( 0.324532, "F" )
Print "P ---> " & vbs.Format( 0.324532, "P" )
Print "N ---> " & vbs.Format( 3984569, "N" )
Print "E ---> " & vbs.Format( 0.324532, "E" )
Print "C ---> " & vbs.Format( 324532, "C" )
Print "G ---> " & vbs.Format( Now, "G" )
Print "D ---> " & vbs.Format( Now, "D" )
Print "T ---> " & vbs.Format( Now, "T" )
Print "F ---> " & vbs.Format( Now, "F" )
Print "M ---> " & vbs.Format( Now, "M" )
Print "R ---> " & vbs.Format( Now, "R" )
Print "U ---> " & vbs.Format( Now, "U" )
Print "Y ---> " & vbs.Format( Now, "Y" )
Print "zzz ---> " & vbs.Format( Now, "zzz" )
Print String( 50, "*" ) & vbCrLf & "IIf Function"
Set vbi = DotNetFactory.CreateInstance( "Microsoft.VisualBasic.Interaction" )
response = Msgbox( "Do you like QTP?", vbYesNo + vbQuestion, "DotNetFactory" )
Print vbi.IIf( response = vbYes, "You Pressed Yes", "You Pressed No" )
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Appendix 14.A – Enumerations
System.DateTimeKind Enumeration
Constant Value Description
Local 2 The time represented is local time.
Unspecified 0 The time represented is not specified as either local time or Coordinated Universal Time (UTC).
Utc 1 The time represented is UTC.
Table 1 – DateTimeKind Enumeration Values http://msdn2.microsoft.com/en-us/library/shx7s921.aspx
System.DayOfWeek Enumeration
Constant Val Description
Friday 5 Indicates Friday.
Monday 1 Indicates Monday.
Saturday 6 Indicates Saturday.
Sunday 0 Indicates Sunday.
Thursday 4 Indicates Thursday.
Tuesday 2 Indicates Tuesday.
Wednesday 3 Indicates Wednesday.
Table 2 – DayOfWeek Enumeration Values
Standard DateTime Format Strings
Format Name Description
d Short date pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.ShortDatePattern property.
D Long Date Pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.LongDatePattern property.
f Full date/time pattern (short time)
Represents a combination of the long date (D) and short time (t) patterns, separated by a space.
F Full date/time pattern (long time)
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.FullDateTimePattern property.
g General date/time pattern (short time)
Represents a combination of the short date (d) and short time (t) patterns, separated by a space.
G General date/time pattern (long time)
Represents a combination of the short date (d) and long time (T) patterns, separated by a space.
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M or m Month Day Pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.MonthDayPattern property.
o Round-trip date/time pattern
Represents a custom DateTime format string using a pattern that preserves time zone information. The pattern is designed to round-trip DateTime formats, including the Kind property, in text. Then the formatted string can be parsed back using Parse or ParseExact with the correct Kind property value.
R or r RFC1123 pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.RFC1123Pattern property. The pattern is a defined standard and the property is read-only. Therefore, it is always the same regardless of the culture used or the format provider supplied.
s Sortable date/time pattern; conforms to ISO 8601
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.SortableDateTimePattern property. This pattern is a defined standard and the property is read-only. Therefore, it is always the same regardless of the culture used or the format provider supplied.
t Short time pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.ShortTimePattern property.
T Long time pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.LongTimePattern property.
u Universal sortable date/time pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.UniversalSortableDateTimePattern property. This pattern is a defined standard and the property is read-only. Therefore, it is always the same regardless of the culture used or the format provider supplied.
U Universal sortable date/time pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.FullDateTimePattern property. This pattern is the same as the full date/long time (F) pattern. However, formatting operates on the Coordinated Universal Time (UTC) that is equivalent to the DateTime object being formatted.
Y or y Year month pattern
Represents a custom DateTime format string defined by the current DatetimeFormatInfo.YearMonthPattern property
Table 3 – DateTime Format Strings http://msdn2.microsoft.com/en-us/library/az4se3k1.aspx
Custom DateTime Format Strings
Fomat Description
d Represents the day of the month as a number from 1 through 31. A single-digit day is formatted without a leading zero. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
dd Represents the day of the month as a number from 01 through 31. A single-digit day is formatted with a leading zero.
ddd Represents the abbreviated name of the day of the week as defined in the current System.Globalization.DateTimeFormatInfo.AbbreviatedDayNames property.
dddd (plus any number of additional "d" specifiers)
Represents the full name of the day of the week as defined in the current System.Globalization.DateTimeFormatInfo.DayNames property.
f Represents the most significant digit of the seconds fraction.
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Note that if the "f" format specifier is used alone, without other format specifiers, it is interpreted as the "f" standard DateTime format specifier (full date/time pattern). For more information about using a single format specifier, see Using Single Custom Format Specifiers.
When you use this format specifier with the ParseExact or TryParseExact method, the number of "f" format specifiers that you use indicates the number of most significant digits of the seconds fraction to parse.
ff Represents the two most significant digits of the seconds fraction.
fff Represents the three most significant digits of the seconds fraction.
ffff Represents the four most significant digits of the seconds fraction.
fffff Represents the five most significant digits of the seconds fraction.
ffffff Represents the six most significant digits of the seconds fraction.
fffffff Represents the seven most significant digits of the seconds fraction.
F Represents the most significant digit of the seconds fraction. Nothing is displayed if the digit is zero. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
When you use this format specifier with the ParseExact or TryParseExact method, the number of "F" format specifiers that you use indicates the maximum number of most significant digits of the seconds fraction to parse.
FF Represents the two most significant digits of the seconds fraction. However, trailing zeros, or two zero digits, are not displayed.
FFF Represents the three most significant digits of the seconds fraction. However, trailing zeros, or three zero digits, are not displayed.
FFFF Represents the four most significant digits of the seconds fraction. However, trailing zeros, or three zero digits, are not displayed.
FFFFF Represents the five most significant digits of the seconds fraction. However, trailing zeros, or three zero digits, are not displayed.
FFFFFF Represents the six most significant digits of the seconds fraction. However, trailing zeros, or three zero digits, are not displayed.
FFFFFFF Represents the seven most significant digits of the seconds fraction. However, trailing zeros, or three zero digits, are not displayed.
g or gg (plus any number of additional "g" specifiers)
Represents the period or era (A.D. for example). This specifier is ignored if the date to be formatted does not have an associated period or era string. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
h Represents the hour as a number from 1 through 12, that is, the hour as represented by a 12-hour clock that counts the whole hours since midnight or noon. Consequently, a particular hour after midnight is indistinguishable from the same hour after noon. The hour is not rounded, and a single-digit hour is formatted without a leading zero. For example, given a time of 5:43, this format specifier displays "5". For more information about using a single format specifier, see Using Single Custom Format Specifiers.
hh, hh (plus any number of additional "h" specifiers)
Represents the hour as a number from 01 through 12, that is, the hour as represented by a 12-hour clock that counts the whole hours since midnight or noon. Consequently, a particular hour after midnight is indistinguishable from the same hour after noon. The hour is not
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rounded, and a single-digit hour is formatted with a leading zero. For example, given a time of 5:43, this format specifier displays "05".
H Represents the hour as a number from 0 through 23, that is, the hour as represented by a zero-based 24-hour clock that counts the hours since midnight. A single-digit hour is formatted without a leading zero.
HH, HH (plus any number of additional "H" specifiers)
Represents the hour as a number from 00 through 23, that is, the hour as represented by a zero-based 24-hour clock that counts the hours since midnight. A single-digit hour is formatted with a leading zero.
K Represents different values of the DateTime.Kind property, that is, Local, Utc, or Unspecified. This specifier round-trips the kind value in text and preserves the time zone. For the Local kind value, this specifier is equivalent to the "zzz" specifier and displays the local offset, for example, "-07:00". For the Utc kind value, the specifier displays a "Z" character to represent a UTC date. For the Unspecified kind value, the specifier is equivalent to "" (nothing).
m Represents the minute as a number from 0 through 59. The minute represents whole minutes passed since the last hour. A single-digit minute is formatted without a leading zero. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
mm, mm (plus any number of additional "m" specifiers)
Represents the minute as a number from 00 through 59. The minute represents whole minutes passed since the last hour. A single-digit minute is formatted with a leading zero.
M Represents the month as a number from 1 through 12. A single-digit month is formatted without a leading zero. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
MM Represents the month as a number from 01 through 12. A single-digit month is formatted with a leading zero.
MMM Represents the abbreviated name of the month as defined in the current System.Globalization.DateTimeFormatInfo.AbbreviatedMonthNames property
MMMM Represents the full name of the month as defined in the current System.Globalization.DateTimeFormatInfo.MonthNames property.
s Represents the seconds as a number from 0 through 59. The second represents whole seconds passed since the last minute. A single-digit second is formatted without a leading zero. For more information about using a single format specifier, Using Single Custom Format Specifiers.
ss, ss (plus any number of additional "s" specifiers)
Represents the seconds as a number from 00 through 59. The second represents whole seconds passed since the last minute. A single-digit second is formatted with a leading zero.
t Represents the first character of the A.M./P.M. designator defined in the current System.Globalization.DateTimeFormatInfo.AMDesignator or System.Globalization.DateTimeFormatInfo.PMDesignator property. The A.M. designator is used if the hour in the time being formatted is less than 12; otherwise, the P.M. designator is used. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
tt, tt (plus any number of additional "t" specifiers)
Represents the A.M./P.M. designator as defined in the current System.Globalization.DateTimeFormatInfo.AMDesignator or System.Globalization.DateTimeFormatInfo.PMDesignator property. The A.M. designator is used if the hour in the time being formatted is less than 12; otherwise, the P.M. designator is used.
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y Represents the year as at most a two-digit number. If the year has more than two digits, only the two low-order digits appear in the result. If the year has fewer than two digits, the number is formatted without a leading zero. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
yy Represents the year as a two-digit number. If the year has more than two digits, only the two low-order digits appear in the result. If the year has fewer than two digits, the number is padded with leading zeroes to achieve two digits.
yyy Represents the year as a three-digit number. If the year has more than three digits, only the three low-order digits appear in the result. If the year has fewer than three digits, the number is padded with leading zeroes to achieve three digits.
Note that for the Thai Buddhist calendar, which can have five-digit years, this format specifier displays all five digits.
yyyy Represents the year as a four-digit number. If the year has more than four digits, only the four low-order digits appear in the result. If the year has fewer than four digits, the number is padded with leading zeroes to achieve four digits.
Note that for the Thai Buddhist calendar, which can have five-digit years, this format specifier renders all five digits
yyyyy (plus any number of additional "y" specifiers)
Represents the year as a five-digit number. If the year has more than five digits, only the five low-order digits appear in the result. If the year has fewer than five digits, the number is padded with leading zeroes to achieve five digits.
If there are additional "y" specifiers, the number is padded with as many leading zeroes as necessary to achieve the number of "y" specifiers.
z Represents the signed time zone offset of your system from Greenwich Mean Time (GMT) measured in hours. For example, the offset for a computer in the Pacific Standard Time zone is "-8".
The offset is always displayed with a leading sign. A plus sign (+) indicates hours ahead of GMT and a minus sign (-) indicates hours behind GMT. The offset ranges from –12 through +13. A single-digit offset is formatted without a leading zero. The offset is affected by daylight savings time. For more information about using a single format specifier, see Using Single Custom Format Specifiers.
zz Represents the signed time zone offset of your system from Greenwich Mean Time (GMT) measured in hours. For example, the offset for a computer in the Pacific Standard Time zone is "-08".
The offset is always displayed with a leading sign. A plus sign (+) indicates hours ahead of GMT and a minus sign (-) indicates hours behind GMT. The offset ranges from –12 through +13. A single-digit offset is formatted with a leading zero. The offset is affected by daylight savings time.
zzz, zzz (plus any number of additional "z" specifiers)
Represents the signed time zone offset of your system from Greenwich Mean Time (GMT) measured in hours and minutes. For example, the offset for a computer in the Pacific Standard Time zone is "-08:00".
The offset is always displayed with a leading sign. A plus sign (+)
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indicates hours ahead of GMT and a minus sign (-) indicates hours behind GMT. The offset ranges from –12 through +13. A single-digit offset is formatted with a leading zero. The offset is affected by daylight savings time.
: The time separator defined in the current System.Globalization.DateTimeFormatInfo.TimeSeparator property that is used to differentiate hours, minutes, and seconds.
/ The date separator defined in the current System.Globalization.DateTimeFormatInfo.DateSeparator property that is used to differentiate years, months, and days.
" Quoted string (quotation mark). Displays the literal value of any string between two quotation marks ("). Precede each quotation mark with an escape character (\).
' Quoted string (apostrophe). Displays the literal value of any string between two apostrophe (') characters.
%c Represents the result associated with a custom format specifier "c", when the custom DateTime format string consists solely of that custom format specifier. That is, to use the "d", "f", "F", "h", "m", "s", "t", "y", "z", "H", or "M" custom format specifier by itself, specify "%d", "%f", "%F", "%h", "%m", "%s", "%t", "%y", "%z", "%H", or "%M". For more information about using a single format specifier, see Using Single Custom Format Specifiers.
\c The escape character. Displays the character "c" as a literal when that character is preceded by the escape character (\). To insert the backslash character itself in the result string, use two escape characters ("\\").
Any other character Any other character is copied to the result string, and does not affect formatting.
Table 4 – Custom DatTime Format Strings http://msdn2.microsoft.com/en-us/library/8kb3ddd4.aspx
System.Globalization.DateTimeStyles Enumeration
Member Value Description
AdjustToUniversal 16 Indicates that the date and time will be returned as a Coordinated Universal Time (UTC).
AllowInnerWhite 4
Indicates that extra white-space characters in the middle of the string must be ignored during parsing, except if those white-space characters occur in the DateTimeFormatInfo format patterns.
AllowLeadingWhite 1
Indicates that leading white-space characters must be ignored during parsing, except if those white-space characters occur in the DateTimeFormatInfo format patterns.
AllowTrailingWhite 2
Indicates that trailing white-space characters must be ignored during parsing, except if those white-space characters occur in the DateTimeFormatInfo format patterns.
AllowWhiteSpaces 7
Indicates that extra white-space characters anywhere in the string must be ignored during parsing, except if those white-space characters occur in the DateTimeFormatInfo format patterns. This value is a combination of the AllowLeadingWhite, AllowTrailingWhite, and AllowInnerWhite values.
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AssumeLocal 32
Indicates that if no time zone is specified in the parsed string, the string is assumed to denote a local time. Cannot be used with AssumeUniversal or RoundtripKind.
AssumeUniversal 64
Indicates that if no time zone is specified in the parsed string, the string is assumed to denote a Coordinated Universal Time (UTC). Cannot be used with AssumeLocal or RoundtripKind.
NoCurrentDateDefault 8
Indicates that, if the parsed string contains only the time and not the date, the DateTime.Parse and DateTime.ParseExact methods assume the Gregorian date with year = 1, month = 1, and day = 1. If this value is not used, the current date is assumed.
None 0 Indicates that the default formatting options must be used. This is the default style for DateTime.Parse, DateTime.ParseExact, and DateTime.TryParse.
RoundtripKind 128 Preserves the DateTimeKind field of a date when a DateTime object is converted to a string and the string is then converted back to a DateTime object.
Table 5 – System.Globalization.DateTimeStyles Enumeration