filestream文件流

static void Main(string[] args)
        {
            using (FileStream red = new FileStream(@"C:\Documents and Settings\Administrator\桌面\1.txt",FileMode.OpenOrCreate,FileAccess.Read))
            {
                byte[] buffer = new byte[1024 * 1024 * 5];
                int r = red.Read(buffer,0,buffer.Length);
                string s = Encoding.GetEncoding("gb2312").GetString(buffer, 0, r);
                Console.Write(s);
                red.Close();
                red.Dispose();
            }
            Console.ReadKey();
           
        }