Base Class library

.Net Class Frame:
In Conjunction with the CLR, the microsoft has developed a comprehensive set of framework classes,several of which Shown below......

  

      To access any platform feature, you need to know which namespace contains the
type that exposes the functionality you want. If you want to customize the behavior
of any type, you can simply derive your own type from the desired .NET framework
type. The .NET Framework relies on the object-oriented nature of the platform to
present a consistent programming paradigm to software developers. It also enables
you to create your own namespaces containing their own types, which merge
seamlessly into the programming paradigm. This greatly simplifies the Software
Development. 

 

.NET Framework 4.0

.Net Framework is easy to understand and this post is very useful for Begginers

.NetFramework was released at date:2012-08-05 and its version was 4.5.50709.17929
Features of  .Net Framework 4:
1.Web Development.
 JavaScript Intellisense is supported in the Visual Studio Editor

One Click Deployment For Applications

RIA Support by providing Full fledged support for Silverlight.


2.Cloud Development.

Programmers can develop, debug, build, deploy services and applications for MS Cloud Platform
 
3.More Databases.

Support for multiple vendor databases for various database developers.
 
4.Support for Developers.

Context Sensitive Help System making Visual Studio 2010 more easy to write new code more efficiently.
 
5.VSTO.

Support for Office 2010 Application Development making customized Office Application Development Easier.
 
6.Dynamic Support.
  
Visual C# 2010 provides support for late binding to dynamic types by introducing a new type.

7.Better User Experience.

Clear UI Organization

Reduced clutter and complexity

Improved editor

Better support for floating documents and windows

Enhanced document targeting

Focused animations for action feedback.

8.parallel Programming.

Parallel programming is simplified, so both native- and managed-code developers can productively build innovative applications.