ModalPopupExtender silly problems
1. To pass information from server to a modal popup may not display if foreground and background color are same. 2. To create a customized modal popup from open source we need to customize carefully. For example. <asp:Panel ID="Panel1" runat="server" CssClass="modalPopup" Style="display: none" > <br /> <asp:Label ID="lblMsg" runat="server" Height="30px" ForeColor="red"></asp:Label> <table style="width: 270px"> <tr> ...