Gridview Command

<asp:Repeater runat="server" ID="repeaterRVC">
                <ItemTemplate>
                    <table>
                        <tr>
                            <td align ="center">
                                <asp:ImageButton runat ="server" ID ="imgbtnRvc" OnCommand ="imgBtnRvcClick" CommandName="imgbtnRvc" ImageUrl ="~/admin/Images/RVC.gif" CommandArgument ='<%#DataBinder.Eval(Container.DataItem, "Value")%>'/><br /><asp:Label runat ="server" ID ="lblRvc" Text ='<%#DataBinder.Eval(Container.DataItem, "Key")%>'></asp:Label>
                            </td>
                        </tr>
                    </table>
                </ItemTemplate>
            </asp:Repeater>

protected void imgBtnRvcClick(object sender, CommandEventArgs e)
    {
        if (e.CommandName.Equals("imgbtnRvc"))
        {
            lblVender.Text = e.CommandArgument.ToString();
           
        }
    }