DotNetDotNet

Michelle Johnston, Firebird Services Ltd

What is Dot NetWhat is Dot Net

Aims to simplify web developmentLanguage independent – CLR (Common

Language Runtime)Common set of services regardless of

languageInteroperability between technologiesXML/SOAP is at its heart

What is Dot NetWhat is Dot Net

.Net Framework.Net Enterprise ServersCom+Many languages (VB, C#, C++, Java, J#

etc.) access the same CLR

Common Services Common Services (Building Block)(Building Block)

Available to all users of CLR Identity (Passport) Notification / Messaging Personalization (my) Schematized storage (ADO.Net) Calendar Directory (Active Directory – like LDAP) Search Software Delivery

.Net Enterprise Servers.Net Enterprise Servers

SQL Server 2000Biztalk Server 2000Host Integration Server 2000Exchange 2000 Enterprise ServerInternet Security and Acceleration Server

2000 (ISA)Commerce Server 2000

Fully object orientedFully object oriented

No wrappers No scripting objects together Fully supports..

– Inheritance– Encapsulation– Methods– Properties– Events– Constructors

.Net sits on top of...Net sits on top of..

Windows APIVisual Basic FormsASPMFC/ATL

.Net is not hidden.Net is not hidden

Programmers can see all that makes up .NetCan extend .Net classes (unless sealed)Can implement cross-language inheritanceCode is organized into hierarchical

namespaces and classesEverything is an object

LanguagesLanguages

Visual Basic .Net – substantial language improvements (overloading, structured exception handling, stricter type checking)

C# - designed for .Net, component oriented language, can be embedded in ASP.Net pages

C++ - managed extensions to C++, including garbage handling

J#.Net – for Java developers, takes full advantage of the .Net framework, but is NOT OPEN!!

Many other languages are coming on board – COBOL, Pascal and Smalltalk amongst others

Class LibrariesClass Libraries

.Net framework class libraries– System– System.Net– System.IO– System.Globalization– System.Threading– System.Security

ADO .NetADO .Net

System.Data class library– DataSet– DataRow– DataTable– DataView

Disconnected data sets are supported Rich XML support

XML SupportXML Support

System.Xml namespace XML Parser and Writer, both W3C compliant System.Xml.Xsl for transformations XPath – data visual navigation in XML System.Xml.Serialization allows you to move

back and forth between objects and an XML representation

Web ServicesWeb Services

Web service is a reusable component that is available across the internet

System.web / System.Web.Services for web services

DescriptionDiscoveryProtocols

Web FormsWeb Forms System.Web.UI namespace Two types of controls:

– HTML Controls (direct mapping to HTML controls)– Web Controls (richer, e.g a data grid)

Hints and Tips in .NetHints and Tips in .Net

Use a control to do anything!There is always one that does it already!E.g. Charting objects from Software

Artisans, .Net Resource kit has a free standard one, there are many others

E.g. File Management objects – as above

Bits and BobsBits and Bobs

Saving Word, Excel, Powerpoint as html/xml files

Select from an Excel file just as you can a database