Error:

You will get following error, if you try to add a sever control to AjaxTollkit’s tab panel.

TabContainer cannot have children of type 'System.Web.UI.WebControls.DataList'.

That’s because tab panel must be a server control, it should have an ID and runat =”server” attribute.

Solution:

Add an ID and runat =”server” attribute to that TabPanel, like this..

    <cc1:TabContainer ID="TabContainer1" runat="server">

        <cc1:TabPanel ID="TabPanel1" runat="server">

            <ContentTemplate>

                <asp:DataList ID="DataList1" runat="server">

                </asp:DataList>

                <asp:Label ID="Label1" runat="server" Text="Label">

                </asp:Label>

            </ContentTemplate>

        </cc1:TabPanel>

    </cc1:TabContainer>