Where can I find source code for .net CLR and C#?

Question

Is the source code for Microsoft .net CLR and C# open? If yes, where can I download/browse it?

Answer 1

You can use Reflector to view them.

Or, if you have Resharper 5 installed, you can download the source code for viewing purpose.

_{(source: jetbrains.com)}

But no, it is not open source, despite that you can download and view the source code.