pre-populating a modalpopupextender

Hi All,

I am using a modalpopupextender control on a form. The popup is actually a panel as opposed to another seperate from. To date the method for working like this has worked fine, however I have never had areason to pre-populate the popup. This time I do and now I have a problem.

My main form displays items based on a user selection. At the bottom of the page they are allowed to add or remove items so for this we want to pre-populate the popup before displaying it. To keep things simple for the moment I've just placed a label on my panel that is part of the popup. when the user has made a selection on the main page, I set the label ready for when the user may decide to use the popup. The probem is that when the popup is displayed, the label hasn't got the value. To help understand what I'm doing here's some of my code.

<cc1:ModalPopupExtender ID="mpeModifyRelationships" runat="server" PopupControlID="ModifyRelationships" TargetControlID="btnFake" BackgroundCssClass="modalBackground" CancelControlID="RelationshipCancelButton" ></cc1:ModalPopupExtender><script type="text/javascript">function showRelationShipPopup(){$get('<%=ModifyRelationships.ClientID%>').className = "modalpopup";$find('<%=mpeModifyRelationships.ClientID%>').show();return false;}</script>

then also on the main page I have this button. This makes the call to the above function causing the popup to display.

<asp:Button ID="btnModify" runat="server" Text="Modify Relationship" Enabled="false" OnClientClick="return showRelationShipPopup()" />

Now my popup is made up thus:

 
 <asp:Panel ID="ModifyRelationships" runat="server" Height="500px" Width="1000px" BackColor="White" BorderStyle="Solid" CssClass="hidden" ScrollBars="Auto"> <table> <tr> <td>Attribute: <asp:Label ID="lblAttribute" runat="server" Text=""></asp:Label></td> <td>Component: <asp:Label ID="lblComponent" runat="server" Text=""></asp:Label></td> <td>Sub-Component: <asp:Label ID="lblSubComponent" runat="server" Text=""></asp:Label></td> </tr> </table> Associated Sors <div style="margin-left: 20px; margin-right: 20px" class="box"> <asp:ListBox ID="lstBoxAssSors" SelectionMode="single" runat="server" Height="120px" Width="936px"></asp:ListBox> </div> <asp:Button ID="RelationshipCancelButton" runat="server" Text="Cancel" CausesValidation="False" Width="80px" /> </asp:Panel>
 

So behind the scenes I'm setting lblAttribute.text, but when the button is pressed the popup displays, but the text is empty.

See this thread:http://forums.asp.net/p/1149333/1870370.aspx

-Damien