How do I prevent the closing of modal popup window(ModalPopupExtender) on postback?

Question

I'm using Microsoft AjaxControlToolkit for modal popup window.

And on a modal popup window, when a postback occurred, the window was closing. How do I prevent from the closing action of the modal popup?

Answer 1

Put you controls inside the update panel. Please see my sample code, pnlControls is control that holds controls that will be displayed on popup:

<asp:Panel ID="pnlControls" runat="server">

    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
               <asp:Button ID="TestButton" runat="server" Text="Test Button" onclick="TestButton_Click" />
            <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>         
        </ContentTemplate>

    </asp:UpdatePanel>

This will do the job for you :)

Best regards, Gregor Primar

Answer 2

You can call Show() method during postback to prevent the modal popup window from closing

MyModalPopoupExtender.Show()