Csv standard read/write

class Program    {        static void Main(string[] args)        {            //TestReadCsv();            TestWriteCsv();            Console.ReadLine();        }        static void TestWriteCsv()         {            using (FileStream fileStream = new FileStream("comment_1.csv", FileMode.OpenOrCreate, FileAccess.Write))            using (StreamWriter reader = new StreamWriter(fileStream, Encoding.GetEncoding("GBK")))            using (CsvWriter csv = new CsvWriter(reader))            {                Comment com = new Comment();                com.id = "100";                com.iid = "1000";                com.Content = "hasfsfasdf,,,,,,,,,,,,,,,,,,,,..........，，，，,,,,,ha";                List<Comment> list = new List<Comment>();                list.Add(com);                csv.WriteRecords<Comment>(list);            }        }        static void TestReadCsv()         {            using (FileStream fileStream = new FileStream("comment.csv", FileMode.Open, FileAccess.Read))            using (StreamReader reader = new StreamReader(fileStream, Encoding.GetEncoding("GBK")))            using (CsvReader csv = new CsvReader(reader))            {                csv.Read();                var content = csv.GetRecords<Comment>();            }        }    }