title: How do I pick up the selected source file in a visual studio extension?
body: <p>I am writing have a visual studio extension.</p>
  
  <p>What I want to do is run a menu option (ok done this) which picks up the file I have selected using the source control explorer and works with it.</p>
  
  <p>Any Ideas how I can get this file?
  I really need the file itself and the TFS path $/....</p>
  
  <p>This is not the selected file in "Solution Explorer".</p>
  
  <p>Thanks in anticipation.</p>