fileSystemWatch为什么在文件夹重命名时不会触发
我设置监视的目录下有子目录重命名后，发现不会触发这个事件，要怎么处理？
[解决办法]
比如：

private void Form1_Load(object sender, EventArgs e)
        {
            this.fileSystemWatcher1.Path = @"C:\Users\guwei4037\Desktop";
            this.fileSystemWatcher1.Renamed += fileSystemWatcher1_Renamed;
        }

        private void fileSystemWatcher1_Renamed(object source, RenamedEventArgs e)
        {
            MessageBox.Show(string.Format("File: {0} renamed to {1}", e.OldFullPath, e.FullPath));
        }