title: Progress template in the middle of content template
body: <p>I have a gridview in update panel and I am doing paging in that, 
  I want update progress while paging</p>
  
  <pre><code> &lt;asp:UpdateProgress ID="upGvFinishProg" runat="server" AssociatedUpdatePanelID="upGvFinish" DisplayAfter="0"&gt;
                      &lt;ProgressTemplate&gt;
                          &lt;center&gt;
                          Loading ....
                          &lt;/center&gt;
                      &lt;/ProgressTemplate&gt;
  </code></pre>
  
  <p>But this is showing me text below of the gridview. I want this to be shown in the middle of gridview, i.e. middle of the content template of update panel</p>