public void Delete(Viewer record) { var row = this.GetRowByRowId(record.rowID, string.Empty); if (row == null) { row = this.dataSet.ttblviewer.NewttblviewerRow(); Viewer.BuildMinimalRow(ref row, record); this.dataSet.ttblviewer.AddttblviewerRow((pdsviewerDataSet.ttblviewerRow)row); } row.Delete(); this.SaveChanges(); }