title: Modal Popup control not firing orginal button click event
body: <p>Maybe I am not understanding how this works completely but what I have is a gridview custom template with an imagebutton and a modalpopup. Below my page I have my popup panel which is hidden. When I click my image button the panel displays then I click the "btnModalCancelAll" and it starts to step through my method which sets a page variable from 0 to 1 but then the problem comes in it does not continue to the original gridview image click event not sure why. Below is my template field and the popup panel.</p>
  
  <pre><code>&lt;asp:TemplateField&gt;
                      &lt;ItemTemplate&gt;
                        &lt;asp:ImageButton ID="ImageButtonCancelResv" runat="server" Width="20" Height="20px" ImageUrl="~/Images/Delete.png"  OnClick="ImageButtonCancelResv_Click" /&gt;
                            &lt;asp:ModalPopupExtender ID="mpe" runat="server" TargetControlID="ImageButtonCancelResv" PopupControlID="pnlModalPanel" CancelControlID="btnModalCancel"&gt;&lt;/asp:ModalPopupExtender&gt; 
                          &lt;br /&gt;
                          &lt;asp:Label ID="Label1" runat="server" Text="Cancel"&gt;&lt;/asp:Label&gt;
  
                   &lt;/ItemTemplate&gt;
  </code></pre>
  
  <h2>                      </h2>
  
  <pre><code> &lt;asp:Panel ID="pnlModalPanel" CssClass="modalBackground" runat="server" Style="display:none"&gt;
      &lt;asp:UpdatePanel runat="server" ID="updatePanelPopUp"&gt;
      &lt;ContentTemplate&gt;
  
              &lt;div id="modalWrap"&gt;
               &lt;asp:Label ID="lblAreyousure" runat="server" Text="Are you sure you want to do that?"&gt;&lt;/asp:Label&gt;
               &lt;div id="divhr1" class="horizontalRule" runat="server"&gt;&lt;/div&gt;
              &lt;div id="divCancelSummaryAll"&gt;
                     &lt;asp:Label ID="lblEntireFamily" runat="server" Text="Cancel all family reservations from this event date."&gt;&lt;/asp:Label&gt;&lt;br /&gt;
                     &lt;asp:Label ID="lblSummaryDeleteAll" runat="server" Text=""&gt;&lt;/asp:Label&gt;&lt;br /&gt;
                   &lt;asp:Button ID="btnModalDeleteAll" runat="server" CssClass="modalButton" Text="Cancel all Family" OnClick="btnModalDeleteAll_Click" /&gt;
              &lt;/div&gt;
              &lt;div id="divCancelSummaryOne"&gt;
                    &lt;asp:Label ID="Label2" runat="server" Text="Cancel selected child reservation from this event date."&gt;&lt;/asp:Label&gt;&lt;br /&gt;
                   &lt;asp:Label ID="lblSummaryDeleteOne" runat="server" Text=""&gt;&lt;/asp:Label&gt;&lt;br /&gt;
                   &lt;asp:Button ID="btnModalDeleteOne" runat="server" CssClass="modalButton" Text="Cancel this Child" OnClick="btnModalDeleteOne_Click" /&gt;
              &lt;/div&gt;
           &lt;br /&gt;
  
              &lt;asp:Button ID="btnModalCancel" runat="server" Text="Cancel" /&gt;
             &lt;/div&gt;
      &lt;/ContentTemplate&gt;
  &lt;/asp:UpdatePanel&gt;
      &lt;/asp:Panel&gt;
  </code></pre>