文件复制后 FileSystemwatcher onChange

Question

此代码来自另一个堆栈答案，本质上我正在尝试查看 Users 文件夹中的新文件，我知道 OnCreate 会在新文档完全完成之前触发 "copied/downloaded"，我是什么我试图做的是在每个 onChange 事件中复制它，但是复制似乎不会在完成后触发 onChange，尽管 Microsoft 文档说它会触发？

郑重声明 onCreate 工作正常。 waitingForClose 被声明为 public 字符串列表，onCreate 添加文件很好。

   private void MetroWindow_Loaded(object sender, RoutedEventArgs e)
    {
        FileSystemWatcher watcher = new FileSystemWatcher();
        watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.Size;
        watcher.Path = @"C:\Users\MyUser";
        watcher.IncludeSubdirectories = true;
        watcher.Created += new FileSystemEventHandler(onCreate);
        watcher.Changed += new FileSystemEventHandler(onChanged);
        watcher.EnableRaisingEvents = true;
    }

onCreate - 这会触发：

  void onCreate(object sender, FileSystemEventArgs e)
    {
        var fileName = e.Name;
        var destPath = @"C:\Users\myUser\Desktop\someFolder";
        var destfile = System.IO.Path.Combine(destPath, fileName);
        if (fileName.Substring(fileName.Length - 3, 3) == "doc" || fileName.Substring(fileName.Length - 3, 3) == "pdf" || fileName.Substring(fileName.Length - 4, 4) == "docx")
        {
            try
            {
                System.IO.File.Copy(e.FullPath, destfile, true);
            }
            catch
            {
                waitingForClose.Add(e.FullPath);
            }
          Console.WriteLine("File:" + e.FullPath + " " + e.ChangeType);

        }
    }

onChanged- 根本不会触发文件，即使在复制过程中也是如此：

void onChanged(object sender, FileSystemEventArgs e)
{
    var fileName = e.Name;
    var destPath = @"C:\Users\myUser\Desktop\someFolder";
    var destfile = System.IO.Path.Combine(destPath, fileName);

    if (fileName.Substring(fileName.Length - 3, 3) == "doc" || fileName.Substring(fileName.Length - 3, 3) == "pdf" || fileName.Substring(fileName.Length - 4, 4) == "docx")
    {


        if (waitingForClose.Contains(e.FullPath))
        {
            try
            {
                System.IO.File.Copy(e.FullPath, destfile, true);
                waitingForClose.Remove(e.FullPath);
            }
            catch { }
        }
    }

}

好的，看起来这是一个 windows 8 问题，很快就会 post 解决！

Answer 1

好的，

从它的外观来看，FilesystemWatcher onChanged 事件充其量是不确定的（目前已损坏）Windows 8.1。

我最后做的是从 onCreate 创建一个文件数组，然后尝试每 5 秒从该数组复制一次：像这样：

   void onCreate(object sender, FileSystemEventArgs e)
    {
        var fileName = e.Name;
        var destPath = @"C:\Users\myuser\Desktop\Repo";
        var destfile = System.IO.Path.Combine(destPath, fileName);
        if (fileName.Substring(fileName.Length - 3, 3) == "doc" || fileName.Substring(fileName.Length - 3, 3) == "pdf" || fileName.Substring(fileName.Length - 4, 4) == "docx")
        {
// We don't want to track the file if it's triggered a created event because it's copied to our repo.
            if (!fileName.Contains("Repo"))
            {
                try
                {
                    System.IO.File.Copy(e.FullPath, destfile, true);
                }
                catch
                {
                   waitingForClose.Add(e.FullPath);
                }
                Console.WriteLine("File:" + e.FullPath + " " + e.ChangeType);

            } // if (!fileName.Contains("repo"))
        } //  if (fileName.Substring(fileName.Length
    } // void onCreate(

所以现在我们有一个文件数组，我们正在等待实际完成创建我在 Window_onLoad 事件中这样做：

   System.Windows.Threading.DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer();
    dispatcherTimer.Tick += new EventHandler(onTick);
    dispatcherTimer.Interval = new TimeSpan(0, 0, 5);
    dispatcherTimer.Start();

现在开始 OnTick 事件

  void onTick(object sender, EventArgs e)
    {
        List<String> tempList = new System.Collections.Generic.List<String>();

        foreach(String item in waitingForClose){

              try
              {
                    System.IO.File.Copy(System.IO.Path.GetFullPath(item), @"C:\Users\myuser\Desktop\Repo\" + System.IO.Path.GetFileName(item), true);
                    tempList.Add(item);
                }
                catch  {
                    // Do nothing
                }
            }
        waitingForClose.RemoveAll(i => tempList.Contains(i));
    }

文件复制后 FileSystemwatcher onChange

FileSystem watcher onChanged after file Copy

c#

filesystemwatcher