C#实现在线更新软件

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using CCWin;using System.Net;using System.Collections;using System.IO;using System.Xml;using System.Diagnostics;using System.Threading; namespace WriteBook{  public partial class UpdateSoftwareForm : Skin_Metro  {    public UpdateSoftwareForm()    {      InitializeComponent();    }     #region 一些对象和变量     //使用WebClient下载    WebClient client = new WebClient();    ArrayList downlist = new ArrayList();    //当前版本    string nowversion = null;    //最新版本    string latesversion = null;     #endregion     #region 获取版本号     /// <summary>    /// 从服务器上获取最新的版本号    /// </summary>    public void DownloadCheckUpdateXml()    {      try      {        //第一个参数是文件的地址,第二个参数是文件保存的路径文件名        client.DownloadFile("http://bbs.cloudtour.tk/SoftwareDownload/WriteBook/WriteBook2.xml", "WriteBook2.xml");      }      catch      {        MessageBox.Show("没有检测到更新。", "提示");        this.Close();      }    }     /// <summary>    /// 获取本地软件的版本号    /// </summary>    private void NowVersion()    {      nowversion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString() + "/n";      LocalText.Text = nowversion;    }     /// <summary>    /// 读取从服务器获取的最新版本号    /// </summary>    public void LatestVersion()    {      try      {        if (File.Exists("WriteBook2.xml.xml"))        {          XmlDocument doc = new XmlDocument();          //加载要读取的XML          doc.Load("WriteBook2.xml.xml");           //获得根节点          XmlElement WriteBook = doc.DocumentElement;           //获得子节点 返回节点的集合          XmlNodeList Update = WriteBook.ChildNodes;           foreach (XmlNode item in Update)          {            latesversion = item.InnerText;          }          LatestText.Text = latesversion;        }        else        {          MessageBox.Show("没有检测到更新。", "提示");          this.Close();        }      }      catch      {        this.Close();      }    }     #endregion     #region 初始化程序     /// <summary>    /// 初始化程序    /// </summary>    private void InitializeandInstall()    {      UpdateProgressBar.Value = 20;      DownloadCheckUpdateXml();      UpdateProgressBar.Value = 40;      NowVersion();      UpdateProgressBar.Value = 60;      LatestVersion();      UpdateProgressBar.Value = 80;      DownloadInstall();      UpdateProgressBar.Value = 100;    }     #endregion     #region 安装and删除     /// <summary>    /// 下载安装包    /// </summary>    public void DownloadInstall()    {      try      {        if (nowversion == latesversion)        {          MessageBox.Show("您已经是最新版本。", "提示");        }        else if (nowversion != latesversion && File.Exists("WriteBook2.xml"))        {          MessageBox.Show("发现新版本，即将下载更新补丁。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);          client.DownloadFile("http://bbs.cloudtour.tk/SoftwareDownload/WriteBook/WBsetup.exe", "WBsetup.exe");          if (File.Exists("Setup.exe"))          {            InstallandDelete();          }          else          {            for (int i = 1; i < 3; i++)            {              client.DownloadFile("http://bbs.cloudtour.tk/SoftwareDownload/WriteBook/WBsetup.exe", "WBsetup.exe");            }            MessageBox.Show("下载失败，请检查您的网络连接是否正常。", "提示");            this.Close();          }        }      }      catch      {        MessageBox.Show("更新失败，没有发现新版本。", "提示");        this.Close();      }    }     /// <summary>    /// 安装及删除    /// </summary>    private void InstallandDelete()    {      try      {        DialogResult dr = MessageBox.Show("下载更新成功，是否安装新更新？", "提示", MessageBoxButtons.YesNoCancel);        if (dr == System.Windows.Forms.DialogResult.Yes)        {          //启动安装程序          System.Diagnostics.Process.Start("WBsetup.exe");          Thread td = new Thread(JudgeInstall);          td.Start();        }        else { }      }      catch      {        MessageBox.Show("发生未知错误，更新失败。", "提示");        this.Close();      }    }     /// <summary>    /// 判断安装进程是否存在    /// </summary>    public void JudgeInstall()    {      while (true)      {        Process[] processList = Process.GetProcesses();        foreach (Process process in processList)        {          if (process.ProcessName == "WBsetup.exe") { }          else          {            DialogResult dr = MessageBox.Show("更新成功，是否删除安装包？", "提示", MessageBoxButtons.YesNo);            if (dr == System.Windows.Forms.DialogResult.Yes)            {              File.Delete("WBsetup.exe");              File.Delete("WriteBook2.xml");            }          }        }      }    }     #endregion     /// <summary>    /// 点击初始化程序    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    private void UpdateButton_Click(object sender, EventArgs e)    {      InitializeandInstall();    }  }}