title: ASP:Button OnClick event not firing in one specific instance
body: <p>What I have is a popup defined within a user control, that is opened within a taskbar user control, which is attached to a master page, such that:</p>
  
  <pre><code>MasterPage.TaskBarUC.PopupUC
  </code></pre>
  
  <p>Within the popup, there are two buttons, one to save what the user is trying to do within a database, and one to cancel. I have some codebehind that does the work when the user clicks either button. </p>
  
  <p>So every page has the taskbar, and they can click a button on the taskbar to access the popup and save the information. It works perfectly. However, there is one specific page within the site that needs to access the same popup from a button located on the page, as well as from the taskbar. </p>
  
  <p>The button works, and it opens the popup, but for some reason, and only in this case, the "Save" button doesn't activate my codebehind. It DOES perform the validation that I have it do though. What is also weird is that the cancel button, which also activates some codebehind, does do what its supposed to. </p>
  
  <p>I tried putting a breakpoint right at the beginning of my "Save" event handler, and it never reaches it. Its as if the button is only validating, and completely ignoring its OnClick event.</p>
  
  <p>.aspx</p>
  
  <pre><code>&lt;asp:Button ID="btnSave" runat="server" Text="Save" OnClick="btnSave_Click" 
      ValidationGroup="Validation" /&gt;
  </code></pre>