C#中使用FilleStream实现视频文件的复制

谁借莪１个温暖的怀抱￠ 2024-04-17 23:40 11阅读 0赞

## 场景 ##

C\#中FileStream的对比以及使用方法：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100396022][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100396022]

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## 实现 ##

新建控制台程序

在main方法中

//复制源路径
    string source = @"D:\音乐迷\音乐迷\mv\消愁-毛不易.mp4";
    //复制目的路径
    string target = @"C:\Users\Administrator\Desktop\霸道的程序猿.mp4";
    CopyFile(source,target);
    Console.WriteLine("复制成功");
    Console.ReadKey();

然后实现复制视频文件的方法

public static void CopyFile(string source,string target)
            {
                //创建一个负责读取的流
                using (FileStream fsRead = new FileStream(source, FileMode.OpenOrCreate, FileAccess.Read))
    
                {
                    //创建一个负责写入的流
                    using (FileStream fdWrite = new FileStream(target,FileMode.OpenOrCreate,FileAccess.Write))
                    {
                        // 5 兆的字节数组
                        byte[] buffer = new byte[1024*1024*5];
                        //因为文件可能会比较大，所以我们在读取的时候 应该通过一个循环去读取
                        while (true)
                        {
                            //返回本次读取实际读取到的字节数
                            int r = fsRead.Read(buffer, 0, buffer.Length);
                            //如果返回一个0  也就意味着什么都没有读取到 即读取完了
                            if (r == 0)
                            {
                                break;
                            }
                            fdWrite.Write(buffer,0,r);
                        }
    
                       
                    }
                }
            }

### 运行效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100396022]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100396022
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/d568e76b15d94737a9ecc239bb60229b.jpg