title: ASP.NET Update Panel postback only by trigger
body: <p>Is it possible to have the control inside the update panel not to cause a postback and update the control only by a trigger.
  I have tried adding the tag "Triggers" but control is still updating after I do something on it.</p>
  
  <pre><code>&lt;td&gt;
      &lt;asp:UpdatePanel ID="UpdatePanel7" runat="server" UpdateMode="Conditional"&gt;
          &lt;ContentTemplate&gt;
              &lt;uc1:CBP runat="server" ID="C1" /&gt;
          &lt;/ContentTemplate&gt;
          &lt;Triggers&gt;
              &lt;asp:AsyncPostBackTrigger ControlID="C2" /&gt;
          &lt;/Triggers&gt;
      &lt;/asp:UpdatePanel&gt;
  &lt;/td&gt;
  </code></pre>