title: ModalPopupExtender bypassing OnClick
body: <p>Hey so I am pretty new to asp.net, I am trying to create a website/form that takes in a bunch of data and do stuff with it.  I have a submit button that invokes a submitButton_Click method, but I am also having the a modalpopup that presents a "please wait" updatepanel while I do the processing on the server end on the same event. The problem is that it seems like the modalpopup is working fine, but it is surpressing my submitButton_Click method call. What do I do?</p>
  
  <p>Also, if it possiable to have a default method that is invoked when the updatepanel opens? I want the panel to be the same everytime it pops up despite that I update it with the last time.</p>
  
  <pre><code>&lt;asp:Button ID="submitButton" runat="server" Text="Submit" OnClick="submitButton_Click"
              CssClass="buttons"/&gt;
  
  &lt;asp:ModalPopupExtender 
          ID="modalProgress" 
          runat="server" 
          OkControlID="btnOkay" 
          TargetControlID="submitButton" 
          PopupControlID="progessPanel"
          BackgroundCssClass="modalBackground"&gt;
  
  &lt;/asp:ModalPopupExtender&gt;
  </code></pre>