C#问题解决方案 --- 删除CSV指定行，并生成新的CSV

//除开删除第三行，生成新CSV
public bool ChangeCSV(string filename_New,string filename)
{
    //string filename_New = filename + "_hash.csv";

    List<string[]> dataList = new List<string[]>();
    StreamReader reader;

    //读文件
    using (reader = new StreamReader(filename, System.Text.Encoding.GetEncoding("ASCII")))
    {
        while (!reader.EndOfStream)
        {
            string line = reader.ReadLine();
            string[] data = line.Split(',');
            dataList.Add(data);
        }
    }

    //删除第四行
    dataList.RemoveAt(3);

    //写文件
    StreamWriter writer = new StreamWriter(filename_New, false, System.Text.Encoding.Default);
    foreach (string[] data in dataList)
    {
        writer.WriteLine(string.Join(",", data));
    }
    writer.Close();

    return true;
}