title: File.Exists(curFile) Error
body: <p>I'm using Visual Studio 2012 VB.net.
  Every time I try to use <code>If File.Exists(curfile) = True Then</code> It comes back with <code>Error 1   'File' is not declared. It may be inaccessible due to its protection level.</code> Am I missing an API?</p>