title: UpdatePanel update without trigger button
body: <p>I have an UpdatePanel with ContentTemplate specified. When page loads, user can do some AJAX work in other part of the page. Then, after that work is finished, I would like to update only content inside UpdatePanel, but without pressing any buttons etc. I should be done automatically using JavaScript when previously started AJAX work finishes. How to do it without manual clicking on the trigger button?</p>
  
  <p>EDIT: </p>
  
  <p>Ok, I've followed that _doPostBack rule, and whole page is posted.</p>
  
  <pre><code>    &lt;asp:UpdatePanel ID="panelAttachments" runat="server"&gt;
          &lt;ContentTemplate&gt;
      ........
          &lt;/ContentTemplate&gt;
      &lt;/asp:UpdatePanel&gt;
      &lt;input type="text" name="test" onchange="__doPostBack('&lt;%=panelAttachments.UniqueID %&gt;',''); return false;" /&gt;
  &lt;/td&gt;
  </code></pre>
  
  <p>Thanks, Pawel</p>