为什么我的 FileSystem Watcher 没有触发事件？

Question

我在单独的线程上创建了一个 FileSystemWatcher 来监视目录的更改。当我添加新文件或将新文件复制到我试图监控的目录中时，我的任何事件都不会触发。我已经在 Windows 窗体应用程序中成功使用了 FileSystemWatcher 类，所以我猜我遗漏了一些简单的东西。

public partial class MainWindow : Window
{

    System.IO.FileSystemWatcher watcher;
    public MainWindow()
    {
        InitializeComponent();
        System.Threading.Thread t1 = new System.Threading.Thread(MonitorDir);
        t1.IsBackground = true;
        t1.Start();
    }

    private void MonitorDir()
    {

        watcher = new System.IO.FileSystemWatcher("C:\\Temp","*.*");
        watcher.Created += Watcher_Created;
        watcher.Disposed += Watcher_Disposed;
        watcher.Error += Watcher_Error;
        watcher.Changed += Watcher_Changed;
        while (true)
        {

        }
    }

    private void Watcher_Changed(object sender, System.IO.FileSystemEventArgs e)
    {
        throw new NotImplementedException();
    }

    private void Watcher_Error(object sender, System.IO.ErrorEventArgs e)
    {
        throw new NotImplementedException();
    }

    private void Watcher_Disposed(object sender, EventArgs e)
    {
        throw new NotImplementedException();
    }

    private void Watcher_Created(object sender, System.IO.FileSystemEventArgs e)
    {
        throw new NotImplementedException();
    }
}

Answer 1

您需要将其EnableRaisingEvents property 设置为true（默认为false），否则不会引发任何事件。

watcher.EnableRaisingEvents = true;