title: VisualStudio / C#: Debugging imported DLL
body: <p>I have a project that imports a DLL (written by me). Sometimes when an exception is raised within a method in the DLL, the host project opens a tab and let me see the code within the DLL. I can also put breakpoints within it.</p>
  
  <p>But this behavior seems quite random, I cannot have it on purpose and not always works. Plus, I can't see the file name in the project explorer window.</p>
  
  <p>Any help on debugging DLLs? Thanks</p>