WPF版本的自动更新程序

　　最近，拿到的项目代码是用WPF写的。C/S结构的东西更新起来不太方便。于是，就决定做个自动更新程序吧。软件本身是用VS2010写的WPF版本的，所以更新程序也就决定用WPF来做吧。虽说，以前用WinForm做过，感觉应该是差不多。可实际操作过程中间，还是碰到了一些不太一样的地方吧。不过，原理都是一样一样滴。

　　这里，只是更新程序的代码，至于版本判断的方法，方式多多吧。这里的更新程序，需要放在软件主程序同目录下，而且我把客户端的版本号放在了软件的配置文件中了。在更新完成后会去修改里边的版本信息。至于，zip包的解压，引用了ICSharpCode.SharpZipLib.dll，网上很多下载的。

　　App.xaml.cs代码

using System;using System.Collections.Generic;using System.Configuration;using System.Data;using System.Linq;using System.Windows;namespace AutoUpdate{ /// <summary> /// App.xaml 的交互逻辑 /// </summary> public partial class App : Application { //重写OnStartup，获得启动程序 protected override void OnStartup(StartupEventArgs e) { if (e.Args != null && e.Args.Count() > 0) { this.Properties["startexe"] = e.Args[0]; this.Properties["version"] = e.Args[1]; } base.OnStartup(e); } }}

 

　　MainWindow.xaml.cs代码

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;using System.Net;using System.Configuration;using System.IO;using System.Diagnostics;using System.Xml;using ICSharpCode.SharpZipLib.Zip;namespace AutoUpdate{ /// <summary> /// MainWindow.xaml 的交互逻辑 /// </summary> public partial class MainWindow : Window { //更新包地址 private string url = ""; //文件名字 private string filename = ""; //下载文件存放全路径 private string filepath = ""; //更新后打开的程序名 string startexe = ""; //新版本号 string version = ""; public MainWindow() { InitializeComponent(); pgbUpdate.Maximum = 3; if (Application.Current.Properties["startexe"] != null) { startexe = Application.Current.Properties["startexe"].ToString().Trim(); } if (Application.Current.Properties["version"] != null) { version = Application.Current.Properties["version"].ToString().Trim(); } } private void Window_Activated(object sender, EventArgs e) { pgbUpdate.Value++; url = ConfigurationSettings.AppSettings["Url"].Trim(); if (url != "") { filename = url.Substring(url.LastIndexOf("/") + 1); //下载文件存放在临时文件夹中 filepath = Environment.GetEnvironmentVariable("TEMP") + @"/" + filename; if (filename != "") { try { KillExeProcess(); DownloadFile(); UnZipFile(); UpdateVersionInfo(); OpenUpdatedExe(); writeLog("更新成功！"); } catch (Exception ex) { writeLog(ex.Message); } } else { writeLog("更新失败：下载的文件名为空！"); return; } } else { writeLog("更新失败：未在App.config中指定需要下载的文件位置！"); } if (File.Exists(filepath)) { File.Delete(filepath); } this.Close(); } /// <summary> /// 杀掉正在运行的需要更新的程序 /// </summary> private void KillExeProcess() { //后缀起始位置 int startpos = -1; try { if (startexe != "") { if (startexe.EndsWith(".EXE")) { startpos = startexe.IndexOf(".EXE"); } else if (startexe.EndsWith(".exe")) { startpos = startexe.IndexOf(".exe"); } foreach (Process p in Process.GetProcessesByName(startexe.Remove(startpos))) { p.Kill(); } } } catch (Exception ex) { throw new Exception("清杀原程序进程出错：" + ex.Message); } } private void pgbUpdate_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e) { pgbUpdate.Dispatcher.Invoke(new Action<DependencyProperty, object>(pgbUpdate.SetValue), System.Windows.Threading.DispatcherPriority.Background, ProgressBar.ValueProperty, pgbUpdate.Value); } /// <summary> /// 下载更新包 /// </summary> public void DownloadFile() { pgbUpdate.Value++; WebClient client = new WebClient(); try { Uri address = new Uri(url); if (File.Exists(filepath)) { File.Delete(filepath); } client.DownloadFile(address, filepath); } catch (Exception ex) { throw new Exception("下载更新文件出错：" + ex.Message); } } private void UpdateVersionInfo() { try { Configuration cfa = ConfigurationManager.OpenExeConfiguration(startexe); cfa.AppSettings.Settings["Version"].Value = version; cfa.Save(); } catch (Exception ex) { throw new Exception("更新版本信息出错：" + ex.Message); } } /// <summary> /// 打开更新后的程序 /// </summary> private void OpenUpdatedExe() { try { if (ConfigurationManager.AppSettings["StartAfterUpdate"] == "true" && startexe != "") { Process openupdatedexe = new Process(); openupdatedexe.StartInfo.FileName = startexe; openupdatedexe.Start(); } } catch (Exception ex) { throw new Exception("打开更新后程序出错：" + ex.Message); } } #region 不好用 /// <summary> /// 解压压缩包，格式必须是*.zip,否则不能解压 /// 需要添加System32下的Shell32.dll /// 不好用总是弹出来对话框 /// </summary> //private void UnZip() //{ // try // { // ShellClass sc = new ShellClass(); // Folder SrcFolder = sc.NameSpace(filepath); // Folder DestFolder = sc.NameSpace(System.Environment.CurrentDirectory); // FolderItems items = SrcFolder.Items(); // DestFolder.CopyHere(items, 16); // } // catch (Exception ex) // { // MessageBox.Show("解压缩更新包出错：" + ex.Message, "提示信息", MessageBoxButton.OK, MessageBoxImage.Error); // } //} #endregion #region 解压zip /// <summary> /// 解压压缩包，格式必须是*.zip,否则不能解压 /// </summary> /// <returns></returns> private void UnZipFile() { pgbUpdate.Value++; try { using (ZipInputStream zis = new ZipInputStream(File.OpenRead(filepath))) { ZipEntry theEntry; while ((theEntry = zis.GetNextEntry()) != null) { string directoryName = System.IO.Path.GetDirectoryName(theEntry.Name); string zipfilename = System.IO.Path.GetFileName(theEntry.Name); if (directoryName.Length > 0 && !Directory.Exists(directoryName)) { Directory.CreateDirectory(directoryName); } if (zipfilename != String.Empty) { using (FileStream streamWriter = File.Create(theEntry.Name)) { int size = 2048; byte[] data = new byte[2048]; while (true) { size = zis.Read(data, 0, data.Length); if (size > 0) { streamWriter.Write(data, 0, size); } else { break; } } } } } } } catch (Exception ex) { throw new Exception("解压缩更新包出错：" + ex.Message); } } #endregion private void writeLog(string str) { string strLog = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " " + str + "/r/n"; StreamWriter errorlog = new StreamWriter(System.IO.Path.Combine(Environment.CurrentDirectory, @"log.txt"), true); errorlog.Write(strLog); errorlog.Flush(); errorlog.Close(); } }}

　　更新程序的App.config

<?xml version="1.0" encoding="utf-8" ?><configuration> <appSettings> <!--更新包下载地址，注意要是zip--> <add key="Url" value=""/> <!--更新完毕是否启动--> <add key="StartAfterUpdate" value="false"/> </appSettings></configuration>