title: .NET classes and their source code
body: <p>When I'm writing a C# (or any .NET programme) I use methods and classes. Most of the code I use is calling methods from the .NET classes. Is it possible (purely out of curiosity) to see the actual source code for these classes?</p>
  
  <p>I know MSDN has full listings of the classes, their properties and their methods. But I would like to see the code.</p>