用后台判断gridview中的单元格是否为空

XS73111btnQDKCPD

  foreach (GridViewRow gridRow in grd.Rows)
  {
                if (_page.GridRowIsSelected(gridRow.RowIndex))
                {
                    if ( string.IsNullOrEmpty(_page.GetRowDataByKey(gridRow.RowIndex, "WLID")) )
                    {
                        _page.ShowMessage($"第{gridRow.RowIndex + 1}行物料WLID为空");
                        return;
                    }
                    if (string.IsNullOrEmpty(_page.GetRowDataByKey(gridRow.RowIndex, "PCH")))
                    {
                        _page.ShowMessage($"第{gridRow.RowIndex + 1}行批次号PCH为空");
                        return;
                    }
                    if (string.IsNullOrEmpty(_page.GetRowDataByKey(gridRow.RowIndex, "GYSID")))
                    {
                        _page.ShowMessage($"第{gridRow.RowIndex + 1}行供应商GYSID为空");
                        return;
                    }
                    if (string.IsNullOrEmpty(_page.GetRowDataByKey(gridRow.RowIndex, "CKID")))
                    {
                        _page.ShowMessage($"第{gridRow.RowIndex + 1}行仓库CKID为空");
                        return;
                    }
                }
            }