/// <summary>
        /// 获取勾选的行有效行号(RowHandle>=0)，行号去重。
        /// </summary>
        /// <param name="gv"></param>
        /// <returns></returns>
        public static int[] GetSelectedRowHandles(this GridView gv)
        {
            var rows = gv.GetSelectedRows();
            return rows.Where(w => w >= 0).Distinct().ToArray();
        }

/// <summary>
        /// 关闭窗体返回当前选择的记录
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnOk_Click(object sender, EventArgs e)
        {
            if (gvDetail.RowCount == 0) return;
            try
            {
                var rows = gvDetail.GetSelectedRowHandles();
                if (rows.Length == 0)
                {
                    Msg.Warning("请勾选记录，然后【确认】");
                    gvDetail.Focus();
                    gvDetail.FocusedColumn = gvDetail.VisibleColumns[0];
                    return;
                }
                foreach (var v in rows)
                {
                    _Result.Add(gvDetail.GetObject<res_PFSummary>(v));
                }

                this.Close();
            }
            catch (Exception ex)
            {
                Msg.ShowException(ex);
            }
        }