BKI_DichVuMatDat.NghiepVu.HopDong.f001_import_hop_dong.find_id_don_vi C# (CSharp) Метод

        private decimal find_id_don_vi(string ma_dv)
        {
            decimal id = (from DataRow dr in m_dt_don_vi.Rows
                          where (string)dr["MA_DON_VI"] == ma_dv
                          select (decimal)dr["ID"]).FirstOrDefault();
            return id;
        }