gridview 模板列的删除按钮 页面上有保存按钮解决方法

/// <summary>
        /// 删除卡片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnCancelCard_Command(object sender, CommandEventArgs e)
        {
            DataTable dableCard = this.GetDataTable();
            ClientService service = new ClientService();
            int i = ((GridViewRow)((ImageButton)sender).NamingContainer).RowIndex;
            dableCard.Rows[i].Delete();
            gvCard.DataSource = dableCard;
            gvCard.DataBind();
            WebCommon.showAlertClose(UpdatePanel1, ResourceMessage.DeleteSuccess);
        }