C# pronounced as c-sharp, is an object oriented,general purpose programming language that got it existence from the combination of C++, Java and the simplicity of visual basic. C# was developed by Microsoft within its .NET framework initiative and later approved as a standard by ECMA (ECMA-334). C# development team was lead by "Anders Hejlsberg" in 2002. It is one of the languages designed for Common Language Infrastructure (CLI). The first version of C# 1.0 came out with .net framework in visual studio 2002 From the above, you can understand which version came in which year. Now, I am going to show you C# version with .NET framework and CLR version with Visual Studio. C# 1.0 .NET framework 1.0,1.1 , CLR version 1.0, Visual Studio 2002. C# 2.0 .NET framework 2.0 , CLR version 2.0, Visual Studio 2005. C# 3.0 .NET framework 3.0,3.5 , CLR version 2.0, Visual Studio 2008. C# 4.0 .NET framework 4.0 , CLR version 4.0, Visual Studio 2010. C#...