C# 学习历程——数据流

using System;
using System.IO;

namespace ImplementingBinaryReadWriteToFile
{
    class Tester
    {
        const int SizeBuff = 1024;

        public static void Main()
        {
            // 创建一个实例并执行它
            Tester t = new Tester();
            t.Run();
        }

        //给它传入一个目录名称来执行它
        private void Run()
        {
             //所读取的文件
            Stream inputStream = File.OpenRead(
                @"C:\test\source\test1.cs");

            // 要写入的文件
            Stream outputStream = File.OpenWrite(
                @"C:\test\source\test1.bak");

            //创建一个保存文件的缓存
            byte[] buffer = new Byte[SizeBuff];
            int bytesRead;

            // 当read方法不断返回字节时，就不断将它们写入输出数据流
            while ((bytesRead =
            inputStream.Read(buffer, 0, SizeBuff)) > 0)
            {
                outputStream.Write(buffer, 0, bytesRead);
            }
    
            inputStream.Close();
            outputStream.Close();
        }
    }