原文地址：
http://www.cnblogs.com/PurpleCow/archive/2012/06/17/2552780.html
http://www.cnblogs.com/lhking/p/3660182.html
表格：
快速记忆：
.NET 2.0 = CLR + BCL + C#(VB.NET) +Win Form+ Web Form.
.NET 3.0 = .NET 2.0 + WCF + WPF + WF + WCS
.NET 3.5 = .NET 3.0 +ASP.NET AJAX + Silverlight + LINQ + ADO.NET Entity Framework and Data Services
.NET 4.0 = .NET 3.5 + PLINQ and Task Parallel + DLR + Background GC
.NET 4.5 = .NET 4.0 + .NET for Metro + Async + Background JIT + Web Sockets
图解：
