C# fileSystemWatcher类的Changed事件触发多次解决办法

private void fileSystemWatcher1_Changed(object sender, System.IO.FileSystemEventArgs e)
{
     fileSystemWatcher1.EnableRaisingEvents = false;
     //文件处理事件
     FileOperation();
     fileSystemWatcher1.EnableRaisingEvents = true;
}

并将fileSystemWatcher1的NotifyFilter属性设置为Size