If you have been using Windows for very long at all, you have probably heard of Microsoft ’s .NET, apparently because an application required you to install it, or you notified it in your list of the installed programs. Unless you are a developer, you do not need a lot of information to make use of Microsoft .NET Framework. You just require it to work.
Microsoft NET Framework 3.5 developed incrementally on the new features recently added in NET Framework 3. Windows Workflow Foundation, Windows Communication Foundation, Windows Presentation Foundation & Windows CardSpace. The features have been attached as new assemblies to bypass breaking changes. It also includes deep integration of LINQ & data awareness, ASP.NET AJAX lets you build more dynamic, more interactive & highly-personalized Web activities that work across all the browsers with the new Web protocol support for developing WCF services including AJAX, REST, JSON, POX, ATOM, RSS & several new WS-* standards, & new classes in .NET Framework 3.5 base class library (BCL) that address many common customer requests. The Microsoft .NET Framework 3.5 Free version is available here which you can download free.