Visualizing the code involved in an action?

Question

I am trying to figure out how a library works and I would like to be able to visualize which methods and lines of code are executed in response to user input (e.g. a keypress or mouse click). Is there a way to do this in .NET?

Answer 1

There's a wonderful, free tool from Microsoft called Pex. Once installed, you can right-click a method and select "Run Pex Exploration". It will analyze the code and show you inputs to touch every part of the method.

For more information, see Pex CodeDigger. Here's a screenshot of it in action: