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();
}