filestream 读取视频文件

 1  class Program
 2     {
 3         static void Main(string[] args)
 4         {
 5             string source = @"F:\361\android studio\4.0\亲情奉献-全套精品.Net基础班视频教程-video\亲情奉献全套精品.Net基础视频教程之10-面向对象多态\（第十二天）\video/13、模拟移动硬盘、U盘、MP3.avi";
 6             string target = @"C:\Users\dell-\Desktop/new.avi";
 7             copy(source, target);
 8             Console.WriteLine("ok");
 9 
10         }
11         public static void copy(string source, string target)
12         {
13             using (FileStream fsread = new FileStream(source, FileMode.Open, FileAccess.Read))
14             {
15                 using (FileStream fswrite = new FileStream(target, FileMode.OpenOrCreate, FileAccess.Write))
16                 {
17                     byte[] b = new byte[1024 * 1024 * 5];
18                     while (true)
19                     {
20                         int a = fsread.Read(b, 0, b.Length);
21                         if(a==0)
22                         {
23                             break;
24                         }
25                         fswrite.Write(b, 0, a);
26                     }
27 
28                 }
29             }
30         }
31     }