title: FileExists timeout
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/1438923/faster-directoryexists-function">Faster DirectoryExists function?</a>  </p>
  </blockquote>
  
  <p>I want to check if some file exists on a network drive. But FileExists is too slow if drive is disconnected. How can I check it with some timeout?</p>
  
  <p>Examples are welcome.</p>