public IActionResult UploadBy(IEnumerable <IFormFile> files) { var accountingSubjects = this.accountingSubjectRepository.FetchAll().Result; var condition = Condition.CreateInstance(Request.Form.Keys.ToDictionary(k => k, v => Request.Form[v].ToString())); var details = new List <Detail>(); foreach (var file in files) { if (file.Length > 0) { using (var streamReader = new StreamReader(file.OpenReadStream(), System.Text.Encoding.UTF8)) { while (!streamReader.EndOfStream) { var readLine = streamReader.ReadLine(); if (string.IsNullOrEmpty(readLine)) { continue; } var fields = readLine.Split(','); details.Add(Detail.CreateInstance(condition, fields, accountingSubjects)); } } } } var result = new Dictionary <string, IEnumerable <Detail> >(); result.Add("conflictDetails", details.Where(item => item.Entrys.Any(ii => string.IsNullOrEmpty(ii.AccountingSubjectCode) || ii.AccountingSubjectCode.Contains(","))).ToList()); result.Add("normalDetails", details.Where(item => !item.Entrys.Any(ii => string.IsNullOrEmpty(ii.AccountingSubjectCode) || ii.AccountingSubjectCode.Contains(","))).ToList()); return(Ok(result)); }