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C# 对多个文件使用FileSystemWatcher_C#_Filesystemwatcher - Fatal编程技术网

C# 对多个文件使用FileSystemWatcher

C# 对多个文件使用FileSystemWatcher,c#,filesystemwatcher,C#,Filesystemwatcher,我想使用FileSystemWatcher监视目录及其子目录中被移动的文件。然后我想在所有文件都被移动后触发一些代码。但我不知道怎么做。我的代码将在每次移动文件时触发,如果用户同时移动多个文件,我只希望对所有文件触发一次。所以基本上我想创建一个列表,一旦所有文件的移动完成,我想对这个列表做一些事情 代码如下: class Monitor { private List<string> _filePaths; public void CreateWatcher(str

我想使用FileSystemWatcher监视目录及其子目录中被移动的文件。然后我想在所有文件都被移动后触发一些代码。但我不知道怎么做。我的代码将在每次移动文件时触发,如果用户同时移动多个文件,我只希望对所有文件触发一次。所以基本上我想创建一个列表,一旦所有文件的移动完成,我想对这个列表做一些事情

代码如下:

class Monitor
{
    private List<string> _filePaths;  
    public void CreateWatcher(string path)
    {
        FileSystemWatcher watcher = new FileSystemWatcher();

        watcher.Filter = "*.*";

        watcher.Created += new
        FileSystemEventHandler(watcher_FileCreated);

        watcher.Path = path;
        watcher.IncludeSubdirectories = true;

        watcher.EnableRaisingEvents = true;
    }

    void watcher_FileCreated(object sender, FileSystemEventArgs e)
    {
        _filePaths.Add(e.FullPath);
        Console.WriteLine("Files have been created or moved!");
    }

}
类监视器
{
私有列表文件路径;
公共void CreateWatcher(字符串路径)
{
FileSystemWatcher watcher=新的FileSystemWatcher();
watcher.Filter=“***”;
watcher.Created+=新建
FileSystemEventHandler(创建了观察者文件);
watcher.Path=Path;
watcher.IncludeSubdirectories=true;
watcher.EnableRaisingEvents=true;
}
void watcher_FileCreated(对象发送方、文件系统目标)
{
_添加(例如FullPath);
WriteLine(“文件已创建或移动!”);
}
}
更新:尝试使用Chris的代码,但不起作用(请参阅我对Chris答案的评论):

类监视器
{
私有列表文件路径;
专用定时器_通知定时器;
私有文件系统监视程序(fsw);
公共监视器(字符串路径)
{
_notificationTimer=新计时器();
_notificationTimer.Appeased+=notificationTimer\u Appeased;
//CooldownSeconds是每次添加文件时计时器“扩展”的秒数。
//我发现将此值放入应用程序配置文件很方便。
int CooldownSeconds=1;
_notificationTimer.Interval=冷却时间秒*1000;
_fsw=newfilesystemwatcher();
_fsw.Path=Path;
_fsw.IncludeSubdirectories=true;
_fsw.EnableRaisingEvents=true;
//设置文件系统监视程序的详细信息。
_fsw.Created+=fsw_Created;
}
私有无效通知计时器(对象发送方,ElapsedEventArgs e)
{
//
//对文件列表执行您想执行的操作。
//
控制台。写入(“完成”);
//停止计时器并等待下一批文件。
_notificationTimer.Stop();
//清除您的文件列表。
_filepath=新列表();
}
//创建文件时激发。
已创建私有无效fsw_(对象发送方、文件系统目标)
{
//添加到我们的文件列表中。
_filepath.Add(例如Name);
//“重置”计时器。
_notificationTimer.Stop();
_notificationTimer.Start();
}
}
更新2:

根据安德斯的回答,我试过:

class Monitor
    {
        private List<string> _filePaths;
        private Timer _notificationTimer;
        private FileSystemWatcher _fsw;
        public Monitor(string path)
        {
            _notificationTimer = new Timer();
            _notificationTimer.Elapsed += notificationTimer_Elapsed;
            // CooldownSeconds is the number of seconds the Timer is 'extended' each time a file is added.
            // I found it convenient to put this value in an app config file.
            int CooldownSeconds = 1;
            _notificationTimer.Interval = CooldownSeconds * 1000;

            _fsw = new FileSystemWatcher();
            _fsw.Path = path;
            _fsw.IncludeSubdirectories = true;
            _fsw.EnableRaisingEvents = true;

            // Set up the particulars of your FileSystemWatcher.
            _fsw.Created += fsw_Created;
        }

        private void notificationTimer_Elapsed(object sender, ElapsedEventArgs e)
        {
            //
            // Do what you want to do with your List of files.
            //
            Console.Write("Done");
            // Stop the timer and wait for the next batch of files.            
            _notificationTimer.Stop();
            // Clear your file List.
            _filePaths = new List<string>();
        }


        // Fires when a file is created.
        private void fsw_Created(object sender, FileSystemEventArgs e)
        {
            // Add to our List of files.
            _filePaths.Add(e.Name);

            // 'Reset' timer.
            _notificationTimer.Stop();
            _notificationTimer.Start();
        }


    }
public class FileListEventArgs : EventArgs
{
    public List<string> FileList { get; set; }
}

public class Monitor
{
    private List<string> filePaths;
    private ReaderWriterLockSlim rwlock;
    private Timer processTimer;
    public event EventHandler FileListCreated;


    public void OnFileListCreated(FileListEventArgs e)
    {
        if (FileListCreated != null)
            FileListCreated(this, e);
    }

    public Monitor(string path)
    {
        filePaths = new List<string>();

        rwlock = new ReaderWriterLockSlim();

        FileSystemWatcher watcher = new FileSystemWatcher();
        watcher.Filter = "*.*";
        watcher.Created += watcher_FileCreated;

        watcher.Path = path;
        watcher.IncludeSubdirectories = true;
        watcher.EnableRaisingEvents = true;
    }

    private void ProcessQueue()
    {
        List<string> list = new List<string>();
        try
        {
            Console.WriteLine("Processing queue, " + filePaths.Count + " files created:");
            rwlock.EnterReadLock();

        }
        finally
        {
            if (processTimer != null)
            {
                processTimer.Stop();
                processTimer.Dispose();
                processTimer = null;
                OnFileListCreated(new FileListEventArgs { FileList = filePaths });
                filePaths.Clear();
            }
            rwlock.ExitReadLock();
        }
    }

    void watcher_FileCreated(object sender, FileSystemEventArgs e)
    {
        try
        {
            rwlock.EnterWriteLock();
            filePaths.Add(e.FullPath);

            if (processTimer == null)
            {
                // First file, start timer.
                processTimer = new Timer(2000);
                processTimer.Elapsed += (o, ee) => ProcessQueue();
                processTimer.Start();
            }
            else
            {
                // Subsequent file, reset timer. 
                processTimer.Stop();
                processTimer.Start();
            }

        }
        finally
        {
            rwlock.ExitWriteLock();
        }
    }
公共类文件ListEventTargets:EventArgs
{
公共列表文件列表{get;set;}
}
公共班长
{
私有列表文件路径;
私有读写器锁;
专用定时器;
公共事件事件处理程序FileListCreated;
已创建公共无效OnFileListCreated(FileListEventTargets e)
{
如果(FileListCreated!=null)
创建的文件列表(此,e);
}
公共监视器(字符串路径)
{
filepath=新列表();
rBlock=新的ReaderWriterLockSlim();
FileSystemWatcher watcher=新的FileSystemWatcher();
watcher.Filter=“***”;
watcher.Created+=watcher\u FileCreated;
watcher.Path=Path;
watcher.IncludeSubdirectories=true;
watcher.EnableRaisingEvents=true;
}
私有void ProcessQueue()
{
列表=新列表();
尝试
{
Console.WriteLine(“处理队列,”+filepath.Count+“创建的文件:”);
rwlock.EnterReadLock();
}
最后
{
if(processTimer!=null)
{
processTimer.Stop();
processTimer.Dispose();
processTimer=null;
OnFileListCreated(新的FileListEventTargets{FileList=FilePath});
filepath.Clear();
}
rwlock.exitradlock();
}
}
void watcher_FileCreated(对象发送方、文件系统目标)
{
尝试
{
rBlock.EnterWriteLock();
添加(例如FullPath);
if(processTimer==null)
{
//第一个文件,启动计时器。
processTimer=新计时器(2000);
processTimer.Appead+=(o,ee)=>ProcessQueue();
processTimer.Start();
}
其他的
{
//后续文件,重置计时器。
processTimer.Stop();
processTimer.Start();
}
}
最后
{
rBlock.ExitWriteLock();
}
}

我必须将事件触发器移动到finally语句中,这样做是有效的。我不知道是否有什么原因我不想这样做?

我必须做完全相同的事情。在监视器类中使用System.Timers.Timer并对其经过的事件进行编码,以处理文件列表并清除列表。当第一项添加到file列表通过FSW事件启动计时器。当后续项目添加到列表中时,通过停止并重新启动计时器来“重置”计时器

大概是这样的:

class Monitor
{
    FileSystemWatcher _fsw;
    Timer _notificationTimer;
    List<string> _filePaths = new List<string>();

    public Monitor() {
        _notificationTimer = new Timer();
        _notificationTimer.Elapsed += notificationTimer_Elapsed;
        // CooldownSeconds is the number of seconds the Timer is 'extended' each time a file is added.
        // I found it convenient to put this value in an app config file.
        _notificationTimer.Interval = CooldownSeconds * 1000;

        _fsw = new FileSystemWatcher();
        // Set up the particulars of your FileSystemWatcher.
        _fsw.Created += fsw_Created;
    }

    private void notificationTimer_Elapsed(object sender, ElapsedEventArgs e) {
        //
        // Do what you want to do with your List of files.
        //

        // Stop the timer and wait for the next batch of files.            
        _notificationTimer.Stop();
        // Clear your file List.
        _filePaths = new List<string>();
    }


    // Fires when a file is created.
    private void fsw_Created(object sender, FileSystemEventArgs e) {
        // Add to our List of files.
        _filePaths.Add(e.Name);

        // 'Reset' timer.
        _notificationTimer.Stop();
        _notificationTimer.Start();
    }
}
类监视器
{
文件系统监视程序_fsw;
定时器通知定时器;
列表_filepath=新列表();
公共监督员(){
_notificationTimer=新计时器();
_notificationTimer.Appeased+=notificationTimer\u Appeased;
//CooldownSeconds是每次添加文件时计时器“扩展”的秒数。
//我发现将此值放入应用程序配置文件很方便。
_notificationTimer.Interval=冷却下降秒
  public class Monitor : IDisposable
  {
     private List<string> filePaths;
     private ReaderWriterLockSlim rwlock;
     private Timer processTimer;
     private string watchedPath;
     private FileSystemWatcher watcher;

     public Monitor(string watchedPath)
     {
        filePaths = new List<string>();

        rwlock = new ReaderWriterLockSlim();

        this.watchedPath = watchedPath;
        InitFileSystemWatcher();
     }

     private void InitFileSystemWatcher()
     {
        watcher = new FileSystemWatcher();
        watcher.Filter = "*.*";
        watcher.Created += Watcher_FileCreated;
        watcher.Error += Watcher_Error;
        watcher.Path = watchedPath;
        watcher.IncludeSubdirectories = true;
        watcher.EnableRaisingEvents = true;
     }

     private void Watcher_Error(object sender, ErrorEventArgs e)
     {
        // Watcher crashed. Re-init.
        InitFileSystemWatcher();
     }

     private void Watcher_FileCreated(object sender, FileSystemEventArgs e)
     {
        try
        {
           rwlock.EnterWriteLock();
           filePaths.Add(e.FullPath);

           if (processTimer == null)
           {
              // First file, start timer.
              processTimer = new Timer(2000);
              processTimer.Elapsed += ProcessQueue;
              processTimer.Start();
           }
           else
           {
              // Subsequent file, reset timer.
              processTimer.Stop();
              processTimer.Start();
           }

        }
        finally
        {
           rwlock.ExitWriteLock();
        }
     }

     private void ProcessQueue(object sender, ElapsedEventArgs args)
     {
        try
        {
           Console.WriteLine("Processing queue, " + filePaths.Count + " files created:");
           rwlock.EnterReadLock();
           foreach (string filePath in filePaths)
           {
              Console.WriteLine(filePath);
           }
           filePaths.Clear();
        }
        finally
        {
           if (processTimer != null)
           {
              processTimer.Stop();
              processTimer.Dispose();
              processTimer = null;
           }
           rwlock.ExitReadLock();
        }
     }

     protected virtual void Dispose(bool disposing)
     {
        if (disposing)
        {
           if (rwlock != null)
           {
              rwlock.Dispose();
              rwlock = null;
           }
           if (watcher != null)
           {
              watcher.EnableRaisingEvents = false;
              watcher.Dispose();
              watcher = null;
           }
        }
     }

     public void Dispose()
     {
        Dispose(true);
        GC.SuppressFinalize(this);
     }

  }     
public class Files
{
     public static FileSystemWatcher WatchForChanges(string path, string filter, Action triggeredAction)
            {
                var monitor = new FileSystemWatcher(path, filter);

                //monitor.NotifyFilter = NotifyFilters.FileName;
                monitor.Changed += (o, e) => triggeredAction.Invoke();
                monitor.Created += (o, e) => triggeredAction.Invoke();
                monitor.Renamed += (o, e) => triggeredAction.Invoke();
                monitor.EnableRaisingEvents = true;

                return monitor;
            }
}
  public IObservable<Unit> OnUpdate(string path, string pattern)
        {
            return Observable.Create<Unit>(o =>
            {
                var watcher = Files.WatchForChanges(path, pattern, () => o.OnNext(new Unit()));

                return watcher;
            });
        }
OnUpdate(path, "*.*").Throttle(Timespan.FromSeconds(10)).Subscribe(this, _ => DoWork())