FileStream构造函数

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace IOtext
{
    class Program
    {
        static void Main(string[] args)
        {
            //打开一个文件夹，并且将信息追加到文件夹末尾
            FileStream fs = new FileStream("c:\\iotext.txt", FileMode.Append, FileAccess.Write, FileShare.Write);
            fs.Close();
            StreamWriter sw = new StreamWriter("c:\\iotext.txt", true, Encoding.ASCII);
            sw.Write("This is the appended line");
            sw.Close();
        }
    }
}