how to use ModalPopupExtender to display popup






                        



<style type="text/css">

   .ModalPopupBG

    {

    background-color:Black; 

    opacity:0.5;

    }

</style>



<cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">

</cc1:ToolkitScriptManager>




<cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server"

     TargetControlID="LinkButton1"

     PopupControlID="Panel1"

     BackgroundCssClass="ModalPopupBG">

</cc1:ModalPopupExtender>



<asp:LinkButton ID="LinkButton1" runat="server">LinkButton

</asp:LinkButton>



<asp:Panel ID="Panel1" runat="server">

          

      <table border="1" style="width: 237px">

           <tr>

           <td>

               Name:

           </td>

           <td>

               <asp:TextBox ID="TextBox1" runat="server">

               </asp:TextBox>

           </td>

           </tr>

           <tr>

           <td>

               City:

           </td>

           <td>

               <asp:TextBox ID="TextBox2" runat="server">

               </asp:TextBox>

           </td>

           </tr>

           <tr>

           <td>

               Phone:

           </td>

           <td>

               <asp:TextBox ID="TextBox3" runat="server">

               </asp:TextBox>

           </td>

           </tr>

           <tr>

           <td colspan="2">

               <asp:Button ID="Button1" runat="server"

               ToolTip="Insert" Text="Add" onclick="Button1_Click" />

           </td>

           </tr>

      </table>

  </asp:Panel>