文件系统监视程序事件触发器问题

看起来,filesystemwatcher不止一次触发事件。这是我的设置;

 watcher = new FileSystemWatcher();
 watcher.Path = @"D:\testSpace";
 watcher.InternalBufferSize = 1024*64;
 watcher.Deleted += Triggered;
 watcher.Changed += Triggered;
 watcher.Created += Triggered;
 watcher.Error += ErrorOccured;
 watcher.NotifyFilter = NotifyFilters.LastWrite;
 watcher.IncludeSubdirectories = true;

 watcher.EnableRaisingEvents = true; 

• 如果更改了文档,则会触发两次“文档更改”事件。

• 除非在文件夹下创建新文件,否则不会触发“新建文件夹”事件。

• 未触发已删除事件(也尝试使用shift delete)

你们知道有什么办法解决这些问题吗?