前台样式:放两个按钮,测试复制速度
后台代码:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Diagnostics;
namespace Windows文件拷贝
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
//File.Copy(@"E:\soft\laomaotao2013.rar", @"G:\images\laomaotao2013.rar", true);
Stream reader = File.Open(@"E:\soft\laomaotao2013.rar",FileMode.Open,FileAccess.Read);
Stream writer = File.Open(@"G:\images\laomaotao2013.rar",FileMode.OpenOrCreate,FileAccess.Write);
Stopwatch watch = new Stopwatch();
watch.Start();
reader.CopyTo(writer, 1024);
watch.Stop();
reader.Dispose();
writer.Dispose();
MessageBox.Show(watch.Elapsed.TotalMilliseconds.ToString());
//重置计时器
watch.Reset();
}
private void button3_Click(object sender, EventArgs e)
{
Stream reader1 = File.Open(@"E:\soft\laomaotao2013.rar", FileMode.Open, FileAccess.Read);
Stream writer1 = File.Open(@"G:\images\laomaotao2013.rar", FileMode.OpenOrCreate, FileAccess.Write);
Stopwatch watch = new Stopwatch();
watch.Start();
reader1.CopyTo(writer1, 1024 * 10);
watch.Stop();
MessageBox.Show(watch.Elapsed.TotalMilliseconds.ToString());
reader1.Dispose();
writer1.Dispose();
}
}
}
测试效果为每次读1k要比每次读1M速度快