title: Fileupload inside UpdatePanel becomes null
body: <p>Dears,</p>
  
  <p>Updatepanel is in Aspx page.</p>
  
  <p>I have a fileupload in .ascx control. Ascx user control is added when its called and every thing else (rest of page controls i.e. listview) works fine on ascx control. </p>
  
  <p>Only fileupload is set to null when Add Button click is fired. I have tried accepted code (<strong>another thread in stackoverflow <a href="https://stackoverflow.com/questions/18651039/persist-fileupload-control-value">Persist FileUpload Control Value</a></strong>) in Page_Load and even Page_Init but still it becomes null.</p>
  
  <p>Kindly suggest.</p>