ASP.NET MVC 导出CSV 的 CsvFileResult 类

public class csvfileresult : fileresult where t : class
    {
        private ienumerable _data;


        public csvfileresult(ienumerable data)
            : base("text/csv")
        {
            _data = data;
        }


        protected override void writefile(httpresponsebase response)
        {
            var maxline = int.parse(configurationmanager.appsettings["csvexport:maxline"]);


            int count = 0;
            var outputstream = response.outputstream;
            using (var streamwriter = new streamwriter(outputstream, system.text.encoding.utf8))
            using (var writer = new csvwriter(streamwriter))
            {
                writer.writeheader();
                foreach (var item in _data)
                {
                    writer.writerecord(item);
                    count++;
                    if (count % 50 == 0)
                    {
                        streamwriter.flush();
                        response.flush();
                    }
                    if (count >= maxline)
                    {
                        break;
                    }
                }
            }
        }
    }

实现依赖于csvhelper