private void ChangeMassSeq(int index, int count, MassChangeValuesType type)
 {
     foreach (
         Y_NORM_NORMATIVE_ROW row in
             ((Y_NORM_NORMATIVE_CELL) DataContext).Y_NORM_NORMATIVE_ROW.Y_NORM_NORMATIVE_HEAD.
                 Y_NORM_NORMATIVE_ROW.Where(y => y.SEQ_NUM > index))
     {
         row.SeqNumChange(count, type);
     }
 }
 public void SeqNumChange(int count, MassChangeValuesType type)
 {
     SEQ_NUM = type == MassChangeValuesType.Delete ? SEQ_NUM - count : SEQ_NUM + count;
 }