文件复制

 1   class Program
 2     {
 3         
 4         static void Main(string[] args)
 5         {
 6            // string source = @"E:\教学视频\net基础全套视频2014班\传智播客.Net学院--特供精品.Net基础全套视频教程2014版\特供精品.Net基础全套视频教程2014版--03c#高级\03--面向对象多态\特供.Net基础全套视频教程2014版（第十二天）\video\4、装向和拆箱.avi";
 7            // string target = @"C:\Users\Administrator\Desktop\target.avi";
 8            //// CopyFile(source, target);
 9            // File.Copy(source, target);
10         
11             Console.Read();
12             
13 
14             
15 
16         }
17         public static void CopyFile(string source, string target)
18         {
19             using(FileStream fsRead=new FileStream(source,FileMode.OpenOrCreate,FileAccess.Read))
20             {
21                 using(FileStream fsWrite=new FileStream(target,FileMode.OpenOrCreate,FileAccess.Write))
22                 {
23                     byte[] buffer = new byte[1024*1024*5];
24                     while (true)
25                     {
26                         int r = fsRead.Read(buffer, 0, buffer.Length);
27                         if (r == 0)
28                         {
29                             break;
30                         }
31                         fsWrite.Write(buffer, 0, r);
32                     }
33                 }
34             }
35         }
36     }