如何让ModalPopupExtender弹出的层能移动位置

Question

 <asp:UpdatePanel ID="UpdatePanel2" runat="server">
      <ContentTemplate>
    <asp:Panel ID="Panel2" runat="server" Style="display: none;"  CssClass="modalBox" Height="350px" Width="347px" >
                       
                      <table align="center">
                           ………………                     
                      </table>
                    </asp:Panel>
      </ContentTemplate>
    </asp:UpdatePanel>
    <cc1:ModalPopupExtender ID="ModalPopupExtender2" runat="server"  
    TargetControlID="HiddenField2" Drag="true" PopupControlID="Panel2"
     BackgroundCssClass="modalBackground" PopupDragHandleControlID="Panel2" 
    >
    </cc1:ModalPopupExtender>

Answer 1

弹出