week 1: the c# language chapter 1: variables and expressions ➤ included in visual studio.net ➤...
TRANSCRIPT
C#4.0Week 1: THE C# LANGUAGE
Chapter 1: Variables and Expressions
➤Included in Visual Studio.NET
➤What the .NET Framework is and what it contains
➤ How .NET applications work
➤ What C# is and how it relates to the .NET Framework
➤ What tools are available for creating .NET applications with C#
C#4.0
Included in Visual Studio.NET
Visual Basic (VB.Net, VB 7.0) C++ C# (đọc là C Sharp) J# (J Sharp) .NET Framework
Windows Programming 1 Chapter 1: Introducing C# Slide 2
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Install Visual Studio.NET 2010
Windows Programming 1 Chapter 1: Introducing C# Slide 3
Chạy file setup.exe ta được hình minh họa (chú ý cài khá lâu có thể hơn 45phút)
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Install Visual Studio.NET 2010
Windows Programming 1 Chapter 1: Introducing C# Slide 4
Trên windows XP phải Service pack3
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Install Visual Studio.NET 2010
Windows Programming 1 Chapter 1: Introducing C# Slide 5
Trên windows XP phải Service pack3
Chú ý
Nên chọn full
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WHAT IS THE .NET FRAMEWORK?
Understanding the .NET Framework Architecture
Windows Programming 1 Chapter 1: Introducing C# Slide 6
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WHAT IS THE .NET FRAMEWORK?
Common Language Runtime Architecture
Windows Programming 1 Chapter 1: Introducing C# Slide 7
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WHAT IS THE .NET FRAMEWORK?
Microsoft’s modern software development platform
Supports several programming languages, including C#, Visual Basic, C++, J#
Programs executed by Common Language Runtime (CLR)
Includes a large library of components (classes) which can be used in programs
Windows Programming 1 Chapter 1: Introducing C# Slide 8
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Writing Applications Using the .NET Framework
CIL (Common Intermediate Language code.), JIT (just-in-time compiler) MSIL or IL (Microsoft Intermediate Language)
Assemblies Managed Code Garbage Collection
Windows Programming 1 Chapter 1: Introducing C# Slide 9
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Writing Applications Using the .NET Framework
Windows Programming 1 Chapter 1: Introducing C# Slide 10
C#Code
C#Compiler
Visual BasicCode
Visual BasicCompiler
COBOLCode
COBOLCompiler
ILJIT
Compiler
NativeCode
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Writing Applications Using the .NET Framework
Windows Programming 1 Chapter 1: Introducing C# Slide 11
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WHAT IS C#?
Applications You Can Write with C# Windows applications Web applications: Web services:
Windows Programming 1 Chapter 1: Introducing C# Slide 12
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Visual Studio
Powerful, professional Integrated Development Environment (IDE)
Integrates compilers, debugger and many other useful tools for development
Can work with many different types of project, including: Console (text-based) applications Windows (GUI) applications Web applications (ASP.NET) Class libraries
Windows Programming 1 Chapter 1: Introducing C# Slide 13
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Visual Studio
Solution explorer
Toolbox windows
Visual designer
Properties windows
Windows Programming 1 Chapter 1: Introducing C# Slide 14
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Visual Studio projects
A project contains source code files, settings and resources for an application
May contain references to class libraries May contain data used by application Building a project:
Compiles source files Copies non-source files to output folder Creates an assembly in output folder
Building a solution builds all its projects
Windows Programming 1 Chapter 1: Introducing C# Slide 15
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Project details
References – class librariesused by this application
Solution folder contents
Project folder contents
Solution file (.sln) and project file (.csproj) are created by VS and contain solution/project configuration information
Windows Programming 1 Chapter 1: Introducing C# Slide 16
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Creating a Visual Studio project
Demo
Windows Programming 1 Chapter 1: Introducing C# Slide 17
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SUMMARY
???Windows Programming 1 Chapter 1: Introducing C# Slide 18
C#4.0Week 1: THE C# LANGUAGE
Chapter 2: Writing a C# Program
A basic working knowledge of Visual Studio 2010 and Visual C# 2010 Express Edition
How to write a simple console application How to write a Windows Forms application
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Visual C# 2010 Ultimate
Windows Programming 1 Chapter 2: Writing a C# Program Slide 20
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CONSOLE APPLICATIONS
Windows Programming 1 Chapter 2: Writing a C# Program Slide 21
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WINDOWS FORMS APPLICATIONS
Windows Programming 1 Chapter 2: Writing a C# Program Slide 22
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The Solution Explorer
Windows Programming 1 Chapter 1: Introducing C# Slide 23
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The Properties Window
Windows Programming 1 Chapter 1: Introducing C# Slide 24
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Code view
Windows Programming 1 Chapter 1: Introducing C# Slide 25
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The Error List Window
Windows Programming 1 Chapter 1: Introducing C# Slide 26
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SUMMARY
Windows Programming 1 Chapter 2: Writing a C# Program Slide 27
? ? ?
C#4.0Week 1: THE C# LANGUAGE
Chapter 3:Variables and Expressions Basic C# syntax Variables and how to use them Expressions and how to use them
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BASIC C# SYNTAX
The look and feel of C# code is similar to that of C++ and Java.
C# compilers ignore additional spacing in code, whether it results from spaces, carriage returns, or tab characters (collectively known as whitespace characters).
Statements C# is a block-structured language, meaning
statements are part of a block of code.
Windows Programming 1 Chapter3: Variables and Expressions Slide 29
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block These blocks, which are delimited with curly
brackets ({ and }), may contain any number of statements, or none at all
Windows Programming 1 Chapter3: Variables and Expressions Slide 30
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comments Comments can be created using //… Multi-lines comments use /* … */ You can use single-line comments that start
with three / symbols instead of two /// A special comment
Comments are ignored by the compiler Used only for human readers
Windows Programming 1 Chapter3: Variables and Expressions Slide 31
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The code outlining
You can do this with the #region and #endregion keywords, which define the start and end of a region of code that can be expanded and collapsed.
Windows Programming 1 Chapter3: Variables and Expressions Slide 32
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VARIABLES
C# syntax for declaring variables merely specifies the type and variable name:
<type> <name>;
int intNumberOfStudents; Declaration includes
Name, follow Naming Convention Rules Data Type Required Value for Constants Optional Initial Value for Variables
Windows Programming 1 Chapter3: Variables and Expressions Slide 33
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Simple Types
Windows Programming 1 Chapter3: Variables and Expressions Slide 34
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Simple Types
Windows Programming 1 Chapter3: Variables and Expressions Slide 35
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Simple Types
Windows Programming 1 Chapter3: Variables and Expressions Slide 36
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Using Simple Type Variables
Windows Programming 1 Chapter3: Variables and Expressions Slide 37
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Variable Naming
The first character of a variable name must be either a letter, an underscore character ( _ ), or the at symbol (@).
Subsequent characters may be letters, underscore characters, or numbers.
Windows Programming 1 Chapter3: Variables and Expressions Slide 38
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String Literals
Windows Programming 1 Chapter3: Variables and Expressions Slide 39
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String Literals
This means that the following strings are equivalent:
"Karli \’s string."
"Karli \u0027 s string.“ @ "A short list:
item 1item 2“
"C:\\Temp\\MyDir\\MyFile.doc“ @ "C:\Temp\MyDir\MyFile.doc"
Windows Programming 1 Chapter3: Variables and Expressions Slide 40
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EXPRESSIONS
Operators can be roughly classified into three categories:
➤ Unary— Act on single operands ➤ Binary—Act on two operands ➤ Ternary—Act on three operands
Windows Programming 1 Chapter3: Variables and Expressions Slide 41
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Mathematical Operators
Windows Programming 1 Chapter3: Variables and Expressions Slide 42
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Manipulating Variables with Mathematical Operators
Windows Programming 1 Chapter3: Variables and Expressions Slide 44
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Assignment Operators
Windows Programming 1 Chapter3: Variables and Expressions Slide 45
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Operator Precedence
Windows Programming 1 Chapter3: Variables and Expressions Slide 46
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Namespaces
Namespaces are also used as a means of categorizing items in the .NET Framework
C# code, by default, is contained in the global namespace
Qualified names use period characters (.) between namespace levels System.Int32
Windows Programming 1 Chapter3: Variables and Expressions Slide 47
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Namespaces
Windows Programming 1 Chapter3: Variables and Expressions Slide 48
Code in the global namespace, however, must refer to this name using the classified name LevelOne.NameOne.
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Namespaces
Within a namespace, you can define nested namespaces, also using the namespace keyword.
Windows Programming 1 Chapter3: Variables and Expressions Slide 49
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SUMMARY
Windows Programming 1 Chapter 3: Variables and Expressions Slide 50
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