title: Looking for a temporary file storage on post back
body: <p>In my webpage their are four controls, a <code>FileUploader</code>, <code>combobox</code>, <code>TextBox</code> and a <code>Button</code>.In the scenario the <code>comboBox</code> causes <code>Post Back</code> and button's click will save the content to the <code>DataBase</code></p>
  
  <p>so when i upload a file and change anything in the comboBox will <code>Reset</code> the <code>fileUploader</code>. i can't avoid the post back of the comboBox, so  is their any way to store the <code>fileUpload.PostedFile</code> while <code>Post back</code>?</p>
  
  <p>Am trying to do something like this:</p>
  
  <pre><code> Dim tempUpload As New FileUpload
   If FileUpload1.HasFile Then
      tempUpload = DirectCast(FileUpload1, FileUpload)
   End If
  </code></pre>
  
  <p>But it will also reset on post back, so that i had tried it in the <code>init</code> event but not result as expected. can anyone help me to recover from this?</p>