title: Add reference for an Asp.Net Web Site project in an MSTest Project
body: <p>I'm Actually using Visual Studio 2010.
  This is the first time I would like to test the Manager and Data persistence Class for my project using MSTest.
  I used DataSets to persist my data in the database and I wrote some Manager to simplify my work. So, I added a Test Project to check for the Manager if it's work correctly. But the problem I cannot add a reference to the project test : The project list is Empty.
  I tried to add the Test Project in my Project Folder and Outside the Project Folder but is the same problem.</p>