C# language comes in to the picture nearly 15 years back; and today this language is treated as one of the best programming language in developing world.Today this language is more enhanced and more feature support . It’s one of the core language of the .Net framework to develop any kind of application. We all using this still long back but we are not aware about who is the father of this language and how this language developed. So in this bellow you find history of C# language.

During the development of the .NET Framework, the class libraries were originally written using a managed code compiler system called Simple Managed C (SMC).[14][15] In January 1999, Anders Hejlsberg formed a team to build a new language at the time called Cool, which stood for “C-like Object Oriented Language”.[16] Microsoft had considered keeping the name “Cool” as the final name of the language, but chose not to do so for trademark reasons. By the time the .NET project was publicly announced at the July 2000 Professional Developers Conference, the language had been renamed C#, and the class libraries and ASP.NET runtime had been ported to C#.

You can read more about this here.

Reference :- C# History Wiki

Happy Coding.