将流中的.csv数据写入IList<string>

using System;
using System.Collections.Generic;
using System.IO;

public class CsvDataReader
{
    public IList<string> ReadCsvData(Stream stream)
    {
        IList<string> csvData = new List<string>();

        using (StreamReader reader = new StreamReader(stream))
        {
            string line;
            while ((line = reader.ReadLine()) != null)
            {
                string[] fields = line.Split(',');
                IList<string> rowData = new List<string>(fields);
                csvData.Add(string.Join(",", rowData));
            }
        }

        return csvData;
    }
}