protected void GDV_Lizenzproduktdetails_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            switch (e.CommandArgument.ToString())
            {
                case "Verwaltung":
                    {
                        Button btn = (Button)e.CommandSource;
                        GridViewRow gvr = ((Control)e.CommandSource).Parent.Parent as GridViewRow;
                        int i = gvr.RowIndex;
                        break;
                    }
            }
        }