监控文件夹的变化
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;using System.Collections;namespace FileWatch{ public partial class FrmFileWatch : Form { /// <summary> /// 监控文件夹的对象 /// </summary> private readonly FileSystemWatcher fileWatcher; public FrmFileWatch() { InitializeComponent(); fileWatcher = new FileSystemWatcher(); //当 Changed、Created、Deleted 和 Renamed 事件由可见 Windows 窗体组件（如 Button）处理时，通过系统线程池访问组件可能不起作用或者导致异常。若要避免这种情况，请将 SynchronizingObject 设置为 Windows 窗体组件，这样将引起在创建组件的同一线程上调用处理 Changed、Created、Deleted 和 Renamed 事件的方法。 fileWatcher.SynchronizingObject = this; //注册事件 fileWatcher.Created += fileWatcher_Created; fileWatcher.Deleted += fileWatcher_Deleted; fileWatcher.Changed += fileWatcher_Changed; fileWatcher.Renamed += fileWatcher_Renamed; } #region 监控文件夹回调函数 /// <summary> /// 创建回调函数 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void fileWatcher_Created(object sender, FileSystemEventArgs e) { lbChangedFile.Items.Add("创建" + e.FullPath); lbChangedFile.SelectedIndex = lbChangedFile.Items.Count -1; } /// <summary> /// 删除回调函数 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void fileWatcher_Deleted(object sender, FileSystemEventArgs e) { lbChangedFile.Items.Add("删除"+ e.FullPath); lbChangedFile.SelectedIndex = lbChangedFile.Items.Count - 1; } /// <summary> /// 修改回调函数 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void fileWatcher_Changed(object sender, FileSystemEventArgs e) { lbChangedFile.Items.Add("修改"+ e.FullPath); lbChangedFile.SelectedIndex = lbChangedFile.Items.Count - 1; } /// <summary> /// 重命名回调函数 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void fileWatcher_Renamed(object sender, RenamedEventArgs e) { lbChangedFile.Items.Add(e.OldFullPath+"重命名为"+ e.FullPath); lbChangedFile.SelectedIndex = lbChangedFile.Items.Count - 1; } #endregion #region 浏览 private void btnBrowse_Click(object sender, EventArgs e) { FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog(); if (DialogResult.OK != folderBrowserDialog.ShowDialog()) return; string path = folderBrowserDialog.SelectedPath; if (!string.IsNullOrEmpty(path.Trim())) { txtPath.Text = path; } } #endregion #region 监控 private void btnFileWatch_Click(object sender, EventArgs e) { if (!Directory.Exists(txtPath.Text.Trim())) { MessageBox.Show(@"该文件夹不存在！", @"信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } //开始监控指定的文件夹 fileWatcher.Path = txtPath.Text.Trim(); fileWatcher.EnableRaisingEvents = true; MessageBox.Show(string.Format(@"文件夹【{0}】已处于监控状态！", txtPath.Text.Trim()), @"信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } #endregion #region 窗体关闭时释放资源 private void FrmFileWatch_FormClosed(object sender, FormClosedEventArgs e) { fileWatcher.EnableRaisingEvents = false; fileWatcher.Dispose(); } #endregion }}
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