How to view source code of dependencies in Visual Studio 2015 by clicking F12?

Question

Clicking F12 on functions from some of dependencies always results with some, often useless, list of variables and methods of class:

It of course provides some brief explanation/summary of what code does, but I often need some more details, preferably: see the code.

Since ASP.net is open-source now , I wonder if there was some possibility to view actual source code of class (using F12 button) instead of showing this metadata. Is there some plugin for that?

Answer 1

I've found some interesting Visual Studio extension. It basically do what I wanted.

Ref12

It unfortunately doesn't support every .NET classess (especially those from the new asp.net core seems to be missing), but it will definitely be useful either way.