using System.IO;
using UnityEngine;

/// <summary>
/// 使用文件流來實現多媒體文件復制
/// </summary>
public class Text03 : MonoBehaviour {

    void Start () {
        //原來路徑
        string source = @"C:\Users\Administrator.PC-201709211725\Desktop\A01、復習.avi";
        //現在路徑
        string target = @"C:\Users\Administrator.PC-201709211725\Desktop\A02、復習.avi
 
";
        //CopyFile(source, target);
    }
    /// <summary>
    /// 多媒體文件復制
    /// </summary>
    /// <param name="source"></param>
    /// <param name="target"></param>
    public static void CopyFile(string source, string target)
    {
        //創建負責讀取的流
        using (FileStream FeRead = new
 
 FileStream(source, FileMode.Open, FileAccess.Read))
        {
            //創建一個負責寫入的流
            using (FileStream FsWrite = new FileStream(target, FileMode.OpenOrCreate, FileAccess.Write))
            {
                byte[] buffer = new byte[1024 * 1024 * 5];
                //因為文件過大需要循環去讀
                while
 
 (true)
                {
                    //返回本次讀取到的字節數
                    int r = FeRead.Read(buffer, 0, buffer.Length);
                    //返回為0  就意味讀完了
                    if (r == 0)
                    {
                        break;
                    }
                    //最後寫入新的文件中
                    FsWrite.Write(buffer, 0, r);
                }

            }
        }
        print("復制成功");
    }

}

使用文件流來實現多媒體文件復制