使用WebClient自动升级程序

private void btnNext_Click(object sender, EventArgs e) { if (isUpdate) { Thread threadDown = new Thread(new ThreadStart(DownUpdateFile)); threadDown.IsBackground = true; threadDown.Start(); } else { MessageBox.Show("没有可用的更新!", "自动更新", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } } private void DownUpdateFile() { KillMainAppRun(); string temp = string.Empty; string temp2 = string.Empty; string[] keys = fileNameDic.Keys.ToArray(); for (int i = 0; i < keys.Length; i++) { temp = updateUrl + "//" + keys[i]; temp2 = tempUpdatePath + "//" + keys[i]; WebClient webClient = new WebClient(); if (webClient.IsBusy) { webClient.CancelAsync(); } webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(webClient_DownloadProgressChanged); webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(webClient_DownloadFileCompleted); webClient.DownloadFileAsync(new System.Uri(temp), temp2, keys[i]); } } private void webClient_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e) { UpdateProgressUI(e.ProgressPercentage); string text = string.Format("正在下载{0}，完成进度{1}/{2}(字节)", e.UserState.ToString(), e.BytesReceived, e.TotalBytesToReceive); UpdateLableText(text); Thread.Sleep(800); } private void webClient_DownloadFileCompleted(object sender, AsyncCompletedEventArgs e) { if (e.Cancelled) UpdateLableText("下载被取消!"); else { UpdateLableText("下载完成!"); } }

我这里其实做的是一个自动升级程序(这里使用webclient 异步更新数据 )只贴了部分代码;

大体思路就是利用 本地和服务器都存在一个程序升级xml 文件,比较更新时间 来确定需要下载那些文件

 

xml 大体格式如下

 

<?xml version="1.0" encoding="gb2312"?>
<AutoUpdater>
  <description>Application autoUpdate</description>
  <Updater>
 <Url>http://192.168.167.85/WebService/SoftUpdate</Url>
 <LastUpdateTime>2008-09-05</LastUpdateTime>
  </Updater>
  <Application applicationId="ForestryPDA">
    <EntryPoint>ForestryPDA</EntryPoint>
 <Version>1.0.0.0</Version>
  </Application>
  <Files>
    <File Ver="1.0.0.0" Name="test.txt"/>
    <File Ver="1.0.0.0" Name="lgms.ico"/>
    <File Ver="1.0.0.0" Name="FormUI.exe"/>
  </Files>
</AutoUpdater>

xml 里面放服务ip地址,有可能服务器地址有变化,

还有 需要下载的文件列表

大家在写过程当中 有可能提示大家web不支持并发io操作,这里要注意创建多个webclient对象,不会出现这种情况了!

这里有一篇 使用webservcie 来做的自动升级

http://blog.csdn.net/zhoujun2008/archive/2009/08/31/4503179.aspx 

没细看.