Hi,

I have a problem with Ajax calendar extender in DNN.

I am using DotNetNuke Community 05.06.02 and AjaxControlToolkit 3.5

After adding calendar extender in my WebUserControl it is not working, and from Error Console I found an error.

 Markup code:

 <asp:UpdatePanel ID="updatepanel2" runat="server">

        <ContentTemplate>

            <div>

                <asp:Label ID="lblDate" runat="server">Date :</asp:Label>

                <asp:TextBox ID="txtDate" runat="server"></asp:TextBox>

                <aj:CalendarExtender ID="CalendarExtender1" runat="server" TargetControlID="txtDate">

                </aj:CalendarExtender>

            </div>

        </ContentTemplate>

    </asp:UpdatePanel>

 Error:  

AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll

After that I added the ToolkitScriptManager,

 <aj:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">

</aj:ToolkitScriptManager>

Then I got an error in DNN page:

 A critical error has occurred.
Object reference not set to an instance of an object.

Need help immediately.

Thanks for your quick feedback, what you suggest to resolve this.
Example will help a lot.