C#控制台基础 filestream实现文件的复制粘贴

 1 using System;
 2 using System.Collections.Generic;
 3 using System.IO;
 4 using System.Linq;
 5 using System.Text;
 6 using System.Threading.Tasks;
 7 
 8 namespace ConsoleApplication3
 9 {
10     class Program
11     {
12         static void Main(string[] args)
13         {
14             //读取文件的路径
15             string pathRead = @"O:\EasyBCD 2.2 Beta - Build 169.exe";
16             
17             //我要把文件存到哪个路径下,并改变文件的名字
18             string pathSave = @"L:\EasyBCD.exe";
19 
20             using (FileStream fsRead = new FileStream(pathRead, FileMode.Open, FileAccess.Read))
21             {
22                 using (FileStream fsWrite = new FileStream(pathSave, FileMode.Create, FileAccess.Write))
23                 {
24                     //每次读取500KB
25                     byte[] buffer = new byte[500 * 1024];
26                     int r = fsRead.Read(buffer,0,buffer.Length);
27                     double fileMov = 0;
28                     while (r>0)
29                     {
30                         fsWrite.Write(buffer, 0, r);
31                         
32                         //存取此次转移的大小是多少KB
33                         fileMov=fileMov+ r / 1024.0;
34                         Console.WriteLine("转移了"+r/1024.0+"KB");
35                         r = fsRead.Read(buffer, 0, buffer.Length);
36                     }
37                     Console.WriteLine("该文件大小"+fileMov+"KB");
38                 }
39             }
40             Console.ReadKey();
41         }
42     }
43 }