title: Postback trigger for button inside a usercontrol in Updatepanel
body: <p>I have a user control placed inside an update panel, ie like this.</p>
  
  <pre><code>&lt;asp:UpdatePanel ID="testupdatepnl" runat="server" UpdateMode="Conditional"&gt;
          &lt;ContentTemplate&gt;
                          &lt;uc1:TestControl ID="ctlTest" runat="server" /&gt;
          &lt;/ContentTemplate&gt;
  &lt;/asp:UpdatePanel&gt;
  </code></pre>
  
  <p>Now i got a button placed inside this user control say Click. I want to postback the whole page on the button click.
  I tried to add a postback trigger like this</p>
  
  <pre><code>&lt;Triggers&gt;
      &lt;asp:PostBackTrigger ControlID="clickButton" /&gt;
  &lt;/Triggers&gt;
  </code></pre>
  
  <p>Since the button is inside the usercontrol , i got error while running like this.</p>
  
  <p>Is there any way to do a postback for this button.</p>