c# - 无法在C#中使用FileSystemWatcher监视文件夹

我正在尝试监视文件夹（及其子文件夹）的更改。但是，我的处理程序事件从未执行。我正在使用以下代码：

FileSystemWatcher m_Watcher = new FileSystemWatcher();
m_Watcher.Path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "/Portal 2 Map Installer/";
m_Watcher.Filter = "";
m_Watcher.NotifyFilter = NotifyFilters.LastAccess |
             NotifyFilters.LastWrite |
             NotifyFilters.FileName |
             NotifyFilters.DirectoryName;
m_Watcher.IncludeSubdirectories = true;
m_Watcher.Changed += new FileSystemEventHandler(OnFolderChange);
m_Watcher.EnableRaisingEvents = true;

请帮忙！

最佳答案

为错误事件创建处理程序，然后查看其内容：

  m_Watcher.Error += new ErrorEventHandler(OnError);