title: In VB.NET check for changes in a file launched with process.start()
body: <p>I'm developing a vbnet/c#.NET based application that opens files with different applications(excel, word, etc).</p>
  
  <p>The application is launched using <code>Dim app As Process = Process.Start(ProcessProperties)</code></p>
  
  <p>Now, when I have to terminate the process I use <code>app.Kill()</code> but I need to check if the document has been modified before killing it.</p>
  
  <p>How can I handle that? And if it's possible, how can I launch the application native prompt for save?</p>
  
  <p>Thanks</p>