如何在RadPanelBar中触发RadButtonLink

Question

我有Telerik：RadButtonLink，当单击该方法从服务器端下载图像时，该radButtonLink位于Telerik：RadPanelbar下，在asp：update面板下使用标签时，它工作正常，放这个标签似乎不起作用当RadPanelPar下的按钮元素！！

<asp:Content ContentPlaceHolderID="CPHMain" ID="Content1" runat="server">
<div class="ChildBody">
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
<Telerik:RadPanelItem runat="server" Expanded="false" Selected="true" Text="Virtual Card Display">
    <Items>
        <Telerik:RadPanelItem runat="server" Value="VirtualCardDisplay">
            <ItemTemplate>
                <div class="container1">
                    <div class="box1">
                        <div class="part-1" style="white-space: nowrap; flex: 0 0 25% !important">
                            <asp:ImageButton ID="imgDownloadLarge" runat="server" Height="11pt" ImageAlign="AbsMiddle" ImageUrl="../../MasterTemplate/Images/download_png_icon.png" OnClientClick="lnkDownloadLarge_Click1" Width="11pt" ToolTip="Download image" />

                            <Telerik:RadLinkButton ID="lnkDownloadLarge1" runat="server" CssClass="LinkAction" Text="Download Large Image" OnClick="lnkDownloadLarge_Click1">
                                <Icon CssClass="rbDownload"></Icon>
                            </Telerik:RadLinkButton>

                        </div>

                        <div class="part-2" style="white-space: nowrap; flex: 0 0 75% !important">
                            <asp:Label ID="lblLargeImageResponse" runat="server" ForeColor="Red" Text=" "></asp:Label>
                        </div>
                    </div>

                </div>
            </ItemTemplate>
        </Telerik:RadPanelItem>
    </Items>
</Telerik:RadPanelItem>
   </ContentTemplate>
        </asp:UpdatePanel>
    </div>
</asp:Content>