C# 如何使用模态弹出扩展器

我想要的是，当单击链接按钮时，面板将弹出。但当我单击链接按钮时，面板将不起任何作用。救命啊！使用模态弹出扩展器的最佳方式是什么？我用错了吗

  <asp:Panel ID="Panel1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <uc1:AssignTicketControl ID="AssignTicketControl1" runat="server" ClientIDMode="Static" />
    </asp:Panel>
    <asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server"
     TargetControlID="LinkButton1" PopupControlID="Panel1">
    </asp:ModalPopupExtender>
    <asp:LinkButton ID="LinkButton1" runat="server">LinkButton</asp:LinkButton>

链接按钮

我将按以下方式安排项目

<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:LinkButton ID="LinkButton1" runat="server">LinkButton</asp:LinkButton>
<asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server"
   TargetControlID="LinkButton1" PopupControlID="Panel1">
 </asp:ModalPopupExtender>
<asp:Panel ID="Panel1" runat="server">
   <uc1:AssignTicketControl ID="AssignTicketControl1" runat="server" ClientIDMode="Static" />
</asp:Panel>

链接按钮