1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.IO;
6
7 namespace ConsoleApplication1
8 {
9 class Program
10 {
11 //delegate string works(int a,int b);
12 static void Main(string[] args)
13 {
14 #region 大文件拷贝
15 FileHelper fh = new FileHelper("c:\\error.txt", "d:\\error.txt");
16 //1.定义读文件的一个流
17 using (FileStream fsRead = new FileStream(fh.Source, FileMode.Open))
18 {
19 long totalLength = fsRead.Length;
20 long readPositon = fsRead.Position;
21 //2.定义一个读文件的缓存区
22 byte[] buffer = new byte[1024 * 1024 * 100];//一次读10m
23 //3.定义一个写文件的流
24 using(FileStream fsWrite = new FileStream(fh.target,FileMode.Create))
25 {
26 while (true)
27 {
28 int r = fsRead.Read(buffer, 0, buffer.Length);
29 if (r <= 0)//如果r<=0则说明读取完毕
30 {
31 break;
32 }
33 else
34 {
35 fsWrite.Write(buffer, 0, r);
36 }
37 }
38
39 }
40
41 }
42 #endregion
43 Console.WriteLine("读取完毕");
44 Console.Read();
45
46 }
47 }
48 public class FileHelper
49 {
50
51
52
53 public string Source { get; set; }
54 public string target { get; set; }
55 public FileHelper(string source,string target)
56 {
57 this.Source = source;
58 this.target = target;
59 }
60 }
61 }
