RadPanelBar's ContentTemplate and HeaderTemplate Is Not Supported

[Duminda]

Hi,

I'm using RadControls for ASP.NET AJAX Q1 2010
Version : 2010.1.519.20
In my web application I'm using panel bar ,but its generated the following error
Warning 15 Validation (XHTML 1.0 Transitional): Element 'headertemplate' is not supported. C:\OfficialProject\Project_VS\PracticeManagementSystem\PracticeManagementSystem\EntityManagement2.aspx 16 38 PracticeManagementSystem

<telerik:RadPanelBar runat="server" ID="RadPanelBar1" Width="100%"
                    Skin="Vista" OnClientLoad="onLoad" >
                    <Items>
                                <telerik:RadPanelItem>
                                    <ItemTemplate>
                                    </ItemTemplate>
                                </telerik:RadPanelItem>
                                <telerik:RadPanelItem Expanded="true">
                                    <HeaderTemplate>
                                        <div style="float: left; padding-top: 1px; z-index: 2800;">
                                            <telerik:RadMenu ID="RadMenu1" runat="server" OnClientItemClicked="onItemClicked"
                                                Skin="Forest" Style="z-index: 2900">
                                                <Items>
                                                    <telerik:RadMenuItem Text="Favorites">
                                                    </telerik:RadMenuItem>
                                                    <telerik:RadMenuItem Text="Records Last Accessed" Selected="true">
                                                    </telerik:RadMenuItem>

                                                </Items>
                                            </telerik:RadMenu>
                                        </div>
                                    </HeaderTemplate>
                                    <ContentTemplate>
                                        <telerik:RadMultiPage ID="RadMultiPage1" runat="server" SelectedIndex="0"
                                                            CssClass="multiPage" Height="250px" Width="100%">
                                            <telerik:RadPageView ID="RadPageView1" runat="server" >
                                                <div style="height: 100px" >

                                                </div>
                                            </telerik:RadPageView>
                                            <telerik:RadPageView ID="RadPageView2" runat="server" >
                                                <div style="height: 100px" >

                                                </div>
                                            </telerik:RadPageView>
                                        </telerik:RadMultiPage>
                                    </ContentTemplate>
                                </telerik:RadPanelItem>
                            </Items>

                    <CollapseAnimation Duration="100" Type="None" />
                    <ExpandAnimation Duration="100" Type="None" />
                </telerik:RadPanelBar>

[Kate]

Hi Duminda,

The reason you encounter this error is because we implemented the HeaderTemplate of the RadPanelBar control in version 2010.3.1022 of the Telerik controls. Therefore I would suggest that you upgrade to some of the latest versions of our controls. For more information you can refer to the release notes here.

Regards,
Kate
the Telerik team