Debug .NET Framework Source Code in Visual Studio 2012?

Question

I am using Visual Studio 2012. I want to Debug .NET Framework source code. I have tried nearly all the options but I am still getting There is source code available for Cu

Answer 1

Debugging .NET Framework sources was broken for a long time. See the relevant suggestion on VisualStudio UserVoice Allow developers to step through .NET Framework sources. Good news: it was finally been fixed! See the following blog post from Microsoft:

A new look for .NET Reference Source

In short:

• New web interface for browsing sources: http://referencesource-beta.microsoft.com/
• All sources, including project files, can be downloaded directly: http://referencesource-beta.microsoft.com/download.html (not compilable though)
• There's a new extension for F12 navigation: http://visualstudiogallery.msdn.microsoft.com/f89b27c5-7d7b-4059-adde-7ccc709fa86e
• Sources are always up to date and debugging isn't broken by patches and updates.

It's currently "beta". Eventually it's going to replace http://referencesource.microsoft.com/. Microsoft also promises to add sources of more assemblies.