Child User Control Button Click not working?
<p>I have an issue with user controls.  I have three user controls: <code>Usercontrol1</code>, <code>Usercontrol2</code>, and <code>Usercontrol3</code>.  <code>Usercontrol3</code> has a "Submit" button.  The controls are nested as follows:</p>

<pre>
  default.aspx
    UserControl1
      UserControl2
        UserControl3
          Submit Button
</pre>

<p>When I run my application, the submit button shows on the page, but when I click on this button, the click event is not raised.  Why is this?</p>
