Using Visual Studio symbols and source files makes debugging much easier. I am specially happy about ASP.NET MVC 2 source files because I develop on ASP.NET MVC 2 almost every day. You may also find other useful symbols and source files. In this posting I will show you how to get ASP.NET MVC source to your computer and how to use it.
1. Debug options
Read more: Gunnar Peipman's ASP.NET blog
1. Debug options
Open options dialog and make sure you have check boxes set as on following image in red boxes.