title: Debug Managed and Unmanaged code together
body: <p>My main startup project is in c++. the solution involves also managed c# code.
  When I debug - I have breakpoints only on the unmanaged sections (on managed breakpoint it states : "The breakpoint will not currently be hit. invalid file line "</p>
  
  <p>I checked the reference and saw that there is dll and pdb there.</p>
  
  <p>What could it be?</p>