title: Hasfile property of FileUpload is always false in GridView
body: <p>I am using FileUpload in GridView and this GridView is in UPdatePanel. This  FileUpload is in footer of the GridView. I am uploading selected file in this FileUploader on a link button in same GridView. BUT when on uploading HasFile property is false.</p>
  
  <p>I have google for this problem and only solution is to put button in  </p>
  
  <pre><code>&lt;asp:PostBackTrigger ControlID="Button1" /&gt;
  </code></pre>
  
  <p>But my FileUPloader is in GridView.</p>
  
  <p>Any help, Thanks.</p>