[Solved] Error: AjaxControlToolkit.ConfirmButtonExtender does not have a public property named DisplayModalPopupID

Hi again,

I keep getting the following error:

Type 'AjaxControlToolkit.ConfirmButtonExtender' does not have a public property named 'DisplayModalPopupID'.

I have been trying to incorporate the Ajax Delete Confirm modal popup that I got from this superb forum:

ASP.Net AJAX ConfirmButtonExtender with ModalPopupExtender Example

I tried some changes by removing DisplayModalPopID and adding the following to that line:

OnOkScript="onOk()"  DropShadow="true"

The error was gone but when I clicked Delete, nothing happened.

Can you please help?

//page directive
<%@ Page Language="C#" AutoEventWireup="true" EnableEventValidation="false" CodeFile="Default.aspx.cs" Inherits="Home" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
...
...
<form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
    <div>
        ...
        ...
     <ItemTemplate>
        <asp:ImageButton ID="imgbtnEdit" CommandName="Edit" runat="server" ImageUrl="~/Images/edit1.gif" ToolTip="Edit" Height="20px" Width="20px" />
        <asp:ImageButton ID="slnkDelete" CommandArgument='<%# Eval("SpeakerID") %>' Text="Delete" runat="server" ImageUrl="~/Images/delete.gif" ToolTip="Click Click to delete" AlternateText="Delete" Height="20px" Width="20px" />
        <cc1:ConfirmButtonExtender ID="cbe" runat="server" DisplayModalPopupID="mpe" TargetControlID="slnkDelete">
        </cc1:ConfirmButtonExtender>
        <cc1:ModalPopupExtender ID="mpe" runat="server" PopupControlID="pnlPopup" TargetControlID="slnkDelete"
            OkControlID="btnYes" CancelControlID="btnNo" BackgroundCssClass="modalBackground">
        </cc1:ModalPopupExtender>
        <asp:Panel ID="pnlPopup" runat="server" CssClass="modalPopup" Style="display: none">
            <div class="header">
                Confirmation
            </div>
            <div class="body">
                Do you want to delete this record?
            </div>
            <div class="footer" align="right">
                <asp:Button ID="btnYes" runat="server" Text="Yes" CssClass="yes" />
                <asp:Button ID="btnNo" runat="server" Text="No" CssClass="no" />
            </div>
        </asp:Panel>
     </ItemTemplate>
     ...
     ...
   </div>
  </form>

//web.config
<system.web>
    ...
    ...
    <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID">
      <controls>
        <add namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" tagPrefix="ajaxToolkit"/>
        <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
	</controls>
    </pages>
    ...
    ...
</system.web>

Once again, thank you very much for your assistance.