Hi, I am using Modal popup extender to show a panel once I click on Button1 control as seen below. The code works fine.
However, I instead of using Button1 control as a target ( TargetControlID="Button1" )  , I want to use another control inside gridview , LbnInternDetail to show detail once a user
click on it.
My question, how can I refrence <asp:LinkButton button which is located inside a gridview 
TargetControlID="GvName.Container(" XXXX ")   // not sure and do not know how 
Please help
 
    <asp:Button ID="Button1" runat="server" Text="fill form" />
        <%--    code from 89 til 100 is modal popup--%>
        <ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server" 
            CancelControlID="btnCancel"
            TargetControlID="Button1" 
            PopupControlID="Panel1">
        </ajaxToolkit:ModalPopupExtender>
        <asp:Panel ID="Panel1" runat="server" CssClass="Popup" align="center" style = "display:none">
        <iframe style=" width: 350px; height: 200px;" id="irm1" src="changePwd.aspx" runat="server"></iframe>
        <br/>
        <asp:Button ID="Button2" runat="server" Text="Close" />
        </asp:Panel>
                        <asp:TemplateField HeaderText="Name " InsertVisible="false" SortExpression="internName">
                            <ItemStyle />
                            <ItemTemplate>
                                    <asp:LinkButton ID="LbnInternDetail"
                                    OnClick="InternDetail"
                                    Text='<%# DataBinder.Eval(Container.DataItem,"internName") %>'
                                    CommandArgument='<%# Eval("internId") %>'
                                    CommandName="select" 
                                    ForeColor="#8C4510" runat="server"></asp:LinkButton>
                            </ItemTemplate>
                        </asp:TemplateField>
Al