public IEnumerable <DtFileInfo> GetByKeyword(string district, string keyword, string type = "") { IEnumerable <CsvFilesInfo> result = DCTestService.QueryDtFileInfos(district, keyword, type); return(result.Select(x => new DtFileInfo { TestDate = (x.TestDate ?? DateTime.Today).ToShortDateString(), Type = x.DataType.Trim(), Name = x.CsvFileName.Trim() })); }