FileSystemWatcher监听资源管理器，监听目录下的创建文件、删除文件、重命名文件

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实例化FileSystemWatcher

FileSystemWatcher fileSystemWatcher = new FileSystemWatcher();

初始化FileSystemWatcher参数及创建相关事件方法

 private void InitFileSystemWatcher()
        {
            fileSystemWatcher.Filter = "*.*";
            fileSystemWatcher.Path = System.AppDomain.CurrentDomain.BaseDirectory;
            tb_Path.Text = fileSystemWatcher.Path;
            fileSystemWatcher.EnableRaisingEvents = true;

            fileSystemWatcher.Changed += new FileSystemEventHandler(FileSystemWatcher_Changed);
            fileSystemWatcher.Created += new FileSystemEventHandler(FileSystemWatcher_Created);
            fileSystemWatcher.Deleted += new FileSystemEventHandler(FileSystemWatcher_Deleted);
            fileSystemWatcher.Renamed += new RenamedEventHandler(FileSystemWatcher_Renamed);
            fileSystemWatcher.Error += new ErrorEventHandler(FileSystemWatcher_Error);
        }

相关处理事件

   /// <summary>
        /// 错误事件的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FileSystemWatcher_Error(object sender, ErrorEventArgs e)
        {
            if (listBox_Info.InvokeRequired)
            {
                Invoke(new Action(new Action(() =>
                {
                    listBox_Info.Items.Add(string.Format("【{0}】错误！", e.ToString()));
                })));
            }
            else
            {
                listBox_Info.Items.Add(string.Format("【{0}】错误！", e.ToString()));
            }


        }
        /// <summary>
        /// 重命名方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FileSystemWatcher_Renamed(object sender, RenamedEventArgs e)
        {
            if (listBox_Info.InvokeRequired)
            {
                Invoke(new Action(new Action(() =>
                {
                    listBox_Info.Items.Add(string.Format("文件【{0}】被换名为：【{1}】", e.OldName, e.Name));
                })));
            }
            else
            {
                listBox_Info.Items.Add(string.Format("文件【{0}】被换名为：【{1}】", e.OldName, e.Name));
            }
        }
        /// <summary>
        /// 发生删除事件时的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FileSystemWatcher_Deleted(object sender, FileSystemEventArgs e)
        {
            if (listBox_Info.InvokeRequired)
            {
                Invoke(new Action(new Action(() =>
                {
                    listBox_Info.Items.Add(string.Format("【{0}】被删除", e.Name));
                })));
            }
            else
            {
                listBox_Info.Items.Add(string.Format("【{0}】被删除", e.Name));
            }
        }
        /// <summary>
        /// 创建新文件时的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FileSystemWatcher_Created(object sender, FileSystemEventArgs e)
        {
            if (listBox_Info.InvokeRequired)
            {
                Invoke(new Action(new Action(() =>
                {
                    listBox_Info.Items.Add(string.Format("有新文件创建，文件名为【{0}】", e.Name));
                })));
            }
            else
            {
                listBox_Info.Items.Add(string.Format("有新文件创建，文件名为【{0}】", e.Name));
            }
        }
        /// <summary>
        /// 新建文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FileSystemWatcher_Changed(object sender, FileSystemEventArgs e)
        {
            if (listBox_Info.InvokeRequired)
            {
                Invoke(new Action(new Action(() =>
                {
                    listBox_Info.Items.Add(string.Format("有新文件夹，文件夹名为【{0}】", e.Name));
                })));
            }
            else
            {
                listBox_Info.Items.Add(string.Format("有新文件夹，文件夹名为【{0}】", e.Name));
            }
        }
        /// <summary>
        /// 修改为APP运行路径
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btn_DefPath_Click(object sender, EventArgs e)
        {
            fileSystemWatcher.Path = System.AppDomain.CurrentDomain.BaseDirectory;
            tb_Path.Text = fileSystemWatcher.Path;
        }
        /// <summary>
        /// 指定输入的路径
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btn_Monitor_Click(object sender, EventArgs e)
        {
            //包含空格的路径 或 路径+文件名（且\后不能有空格）
            if (Regex.IsMatch(tb_Path.Text, @"[a-zA-Z]:(\\[\w\u4e00-\u9fa5]+[\w\u4e00-\u9fa5\s]*)+"))
            {
                fileSystemWatcher.Path = tb_Path.Text;
            }

        }