title: vb6 common dialog box save as, which file extension was chosen
body: <p>With the common dialog control, lets say I set</p>
  
  <pre><code>.Filter = "Text (.txt)|*.txt|Comma Separated (.csv)|*.csv|Excel (.xls)|*.xls"
  </code></pre>
  
  <p>If the user does not explicitly type <code>.txt</code> or <code>.csv</code> or <code>.xls</code> but just enters a filename, how does one know <strong>WHICH</strong> extension they want it saved as?</p>