what is mean of   .Net 2.0 Framework?

the version of .net framework is 2.0

HI

The Microsoft .NET Framework 2.0 builds on the success of the Microsoft .NET Framework 1.0 and 1.1 to provide the best runtime environment for Web and Microsoft Windows client applications. Microsoft's compatibility goal for .NET Framework 1.1 applications is that they should work smoothly on the .NET Framework 2.0 except for a set of documented changes as provided http://go.microsoft.com/fwlink/?linkid=51223.

Executive Summary

• A complete list of known breaking changes is available http://msdn.microsoft.com/library/en-us/dnnetdep/html/breakingchanges.chm.
• Microsoft recommends testing your .NET Framework 1.1 applications against the .NET Framework 2.0. Instructions for doing that are provided in http://msdn.microsoft.com/en-us/library/ms994387.aspx.
• Standalone Microsoft Windows client or Web applications that were built with the .NET Framework 1.1 will automatically run against that framework even if the .NET Framework 2.0 is installed on the computer.
• Managed add-ins to native applications, such as Microsoft Office or Internet Explorer, will automatically run against the latest version of the .NET Framework installed on the computer. Developers and IT managers should test add-ins against the .NET Framework 2.0 before deploying that version of the Framework.
• To discuss and publish information about application compatibility use this MSDN forum: http://go.microsoft.com/fwlink/?linkid=65339

refer
http://msdn.microsoft.com/en-us/library/ms994381.aspx

.NET Framework Definition

The .NET applications and services operate within the .NET Framework (pronounced "dot net framework"). .NET applications do not directly access the operating system. Instead, they use the .NET framework, and the .NET framework accesses the operating system and hardware. The framework consists of two components:

1. The .NET Framework Class Library, and
2. The Common Language Runtime (http://blogs.icerocket.com/tag/CLR)

The http://blogs.technorati.com/tag/framework manages memory management, code execution, etc., and that is why .NET applications are called "managed applications."

The Common Type System makes sure that all .NET applications use the same data types.

The Visual Basic Compiler converts the humanly readable source code into an intermediate language. This intermediate language is also called http://www.idealprogrammer.com/ (or MSIL), and it is contained in an assembly. Assemblies have either a .exe (executable) or .dll (class library) extension. The Common Language Runtime (CLR) converts the intermediate language into the native language needed by the operating system. This is what makes .NET applications platform independent. Currently the CLR is only available on Windows Systems, but someday CLR's could be developed of Unix and Linux. This would allow .NET applications to execute in these environments.

.net framework is s/w framework It includes a largehttp://en.wikipedia.org/wiki/Base_Class_Library and supports several http://en.wikipedia.org/wiki/Programming_language which allows language interoperability,.NET library is available to all the programming languages that .NET supports.

The .NET Framework is an integral Windows component that supports building and running the next generation of applications and XML Web services.
 
The .NET Framework is designed to fulfill the following objectives:

• To provide a consistent object-oriented programming environment whether object code is stored and executed locally, executed locally but Internet-distributed, or executed remotely.

• To provide a code-execution environment that minimizes software deployment and versioning conflicts.

• To provide a code-execution environment that promotes safe execution of code, including code created by an unknown or semi-trusted third party.

• To provide a code-execution environment that eliminates the performance problems of scripted or interpreted environments.

• To make the developer experience consistent across widely varying types of applications, such as Windows-based applications and Web-based applications.

• To build all communication on industry standards to ensure that code based on the .NET Framework can integrate with any other code.

Follow this table -

 

Version	Version Number	Release Date	Visual Studio	Default in Windows
http://en.wikipedia.org/wiki/.NET_Framework_version_history#.NET_Framework_1.0	1.0.3705.0	2002-02-13	http://en.wikipedia.org/wiki/Visual_Studio .NET	Windows XP Tablet and Media Center Editionshttp://en.wikipedia.org/wiki/.NET_Framework#cite_note-3
http://en.wikipedia.org/wiki/.NET_Framework_version_history#.NET_Framework_1.1	1.1.4322.573	2003-04-24	Visual Studio .NET 2003	Windows Server 2003
http://en.wikipedia.org/wiki/.NET_Framework_version_history#.NET_Framework_2.0	2.0.50727.42	2005-11-07	Visual Studio 2005	Windows Server 2003 R2
http://en.wikipedia.org/wiki/.NET_Framework_version_history#.NET_Framework_3.0	3.0.4506.30	2006-11-06		Windows Vista, Windows Server 2008
http://en.wikipedia.org/wiki/.NET_Framework_version_history#.NET_Framework_3.5	3.5.21022.8	2007-11-19	Visual Studio 2008	Windows 7, Windows Server 2008 R2
http://en.wikipedia.org/wiki/.NET_Framework_version_history#.NET_Framework_4	4.0.30319.1	2010-04-12	Visual Studio 2010

A more

Hope this will help you.

thanks very much, but How can I know if I have it installed?

go to control panel, click add remove programs, there u can see whether it is installed.

What is .net Framework ?

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.Net is a framework where we can develop different applications in a single environment using different type of languages.