The .NET Framework is a software framework developed by Microsoft that runs primarily on Microsoft Windows. Microsoft started developing it in the late 1990s under the name Next Generation Windows Services. Each new version of the .NET Framework retains features from previous versions and adds new features, though the CLR version is not always incremented. Major versions include 1.0, 1.1, 2.0, 3.5, 4.0, 4.5, 4.5.1, 4.6 and each was released alongside new versions of Visual Studio and added new programming features and capabilities.

1. Version overview
.NET Framework

2. Introduction
 .NET Framework is a software framework .
 Developed by Microsoft .
 That runs primarily on Microsoft Windows.
 Microsoft started development of .NET Framework in the
late 1990s.
 Under the name of Next Generation Windows Services
(NGWS).

3. History
 Each new version of the .NET Framework retains
features from the previous versions and adds new
features.
 The CLR is identified by its own version number.
 The .NET Framework version number is incremented at
each release, although the CLR version is not always
incremented.

4. History
 2000,
 The first beta versions of .NET 1.0 released.
 CLR version 1.0
 2003
 .NET Framework 1.1 released with minor changes.
 CLR version 1.1
 Released along with Visual Studio .NET 2003.
 Features Enhancement to ASP.NET and ADO.NET.
 Built-in support for ODBC and Oracle Database,
 Built-in support for mobile ASP.NET controls.
 Security Enhancement.

5. History
 2006 (January)
 .NET Framework Version 2.0 released
 CLR version 2.0.
 Released along with Visual Studio 2005, Microsoft SQL
Server 2005, and BizTalk 2006..
 Many additional and new data controls and web
controls.
 Partial Classes,Nullable type,Anonymous methods.
 Generics and generic collections.
.

6. History
 2008
 .NET Framework Version 3.5
released.
 CLR version 2.0
 Released along with Visual Studio
2008 .
 Built-In AJAX Support.
 LINQ.
 Multi-targeting Framework
Support.
 2010
 .NET Framework Version 4.0
released.
 CLR version 4
 Released along with Visual
Studio 2010.
 Expanded base class libraries.
 Cross-platform development
with Portable Class Library.
 Managed Extensibility
Framework (MEF).
 Task Parallel Library.

7. History
 2012
 .NET Framework 4.5 was released.
 Released along with Visual studio 2012.
 CLR version 4
 Support for Windows Store apps.
 Features Enhancement to WPF, WCF, WF, and ASP.NET.
 2013
 The release of .NET Framework 4.5.1.
 CLR version 4.
 Release along with Visual studio 2013.
 Code Analysis UI improvements.
 Performance and debugging improvements.
 Expanded support for Windows Store apps.

8. History
 2014
 .NET Framework 4.6 was announced.
 CLR version 4
 2015
 .NET Framework 4.6 was released.
 CLR version 4.
 Released along with Visual studio 2015.
 Introduced RyuJIT, a new JIT compiler for 64-bit systems.
 Introduced Open Source .NET Framework Packages.
 Event tracing improvements.
 Support for localization of data annotations in ASP.NET.

9. THANK YOU