display panel in gridview

Question

hi.. i wnt to display panel inside gridview.

i have taken button field and commandname of it button is "EDIT" and when it is clicked that panel should be display..

this way..

<ItemTemplate>

<asp:Panel ID="pe" visible="false" runat="server">

               <table class="basic" runat="server" id="tbledit" width="400" border="0">

                    <tr><td>Title:</td>

                    <td><asp:TextBox ID="txtaname" runat="server" /></td>

                    </tr>

                    <tr><td>Description:</td>

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

                    </tr><tr><td colspan="2" align="center">

                        <asp:Button ID="btncreate" CssClass="btn" runat="server" Text="Create" OnClick="btncreate_Click" />&nbsp;&nbsp;&nbsp;

                        <asp:Button ID="btncancel" CssClass="btn" runat="server" Text="Cancel" OnClick="btncancel_Click" />

                    </td>

                    </tr>

                 </table>

               </asp:Panel>

</ItemTemplate>

             <asp:ButtonField ItemStyle-VerticalAlign="top" ButtonType="Button" CommandName="Edit"/>

.CS

 protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)

    {   

        int index=Convert.ToInt32(e.CommandArgument);

        Panel pn = (Panel)GridView1.Rows[index].FindControl("pe");

        if (e.CommandName == "Edit")

        {

            pn.Visible = true;

 

        }

       

    }

but its not working.... i means when i click on buttonfield it doesnt displaying the panel