使用FileStream文件流实现大文件的拷贝

using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Collections;
using System.Diagnostics;
using System.IO;
namespace 练习专用
{
class Program
{
static void Main(string[] args)
{
//创建读取文件的流
using (FileStream fsReader = new FileStream(@"F:\毕设.rar", FileMode.Open))
{
//创建写入文件的流
using (FileStream fsWriter = new FileStream(@"E:\毕设备份.rar", FileMode.OpenOrCreate))
{
//创建一个5M的缓冲区
byte[] buffers = new byte[1024 * 1024 * 5];
int i = 0;
//文件读取到缓冲区
while ((i = fsReader.Read(buffers, 0, buffers.Length)) > 0)
{
//将缓冲区中内容写入fsWriter流
fsWriter.Write(buffers, 0, i);
//显示进度
long l = fsWriter.Length;
double proc = (double)l / fsReader.Length;
Console.WriteLine("拷贝进度{0}%", proc * 100);
}
}
}
}
}
}