public IEnumerable<QUAN_LY_DIEM_CHUAN_SearchResult> QUAN_LY_DIEM_CHUAN_Search(QUAN_LY_DIEM_CHUAN_SearchResult data, int top, string maNguyenVong)
 {
     try
     {
         using (var dataContext = new OOAD_EDUManagementDataContext())
         {
             return dataContext.QUAN_LY_DIEM_CHUAN_Search(
                 data.maQuanLyDiemChuan,
                 data.maChiTieuTuyenSinh,
                 data.maChiTieuNguyenVong,
                 data.diemChuanDuKien,
                 data.diemChuanThucTe,
                 data.maNguoiLap,
                 data.thoiGianLap == null ? "" : data.thoiGianLap.Value.ToString(Constants.FormatDate),
                 data.maNguoiDuyet,
                 data.thoiGianDuyet == null ? "" : data.thoiGianDuyet.Value.ToString(Constants.FormatDate),
                 data.maTrangThaiDuyet,
                 data.trangThaiDuLieu,
                 top,
                 maNguyenVong).ToList();
         }
     }
     catch (Exception e)
     {
         return null;
     }
 }