运行时的界面
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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; namespace WindowsFormsApplication2 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { System.Net.WebClient wc=new System.Net.WebClient (); //异步下载。。将下载的程序保存在程序bin文件里 wc.DownloadFileAsync(new Uri("http://dl_dir.qq.com/qqfile/qq/QQ2010/QQ2010SP3.1.exe"),"QQ2010SP3.1.exe"); wc.DownloadProgressChanged += new System.Net.DownloadProgressChangedEventHandler(wc_DownloadProgressChanged); wc.DownloadFileCompleted += new AsyncCompletedEventHandler(wc_DownloadFileCompleted); } void wc_DownloadFileCompleted(object sender, AsyncCompletedEventArgs e) { //throw new NotImplementedException(); if (MessageBox.Show("您已经下载成功,是否打开应用程序？", "提示", MessageBoxButtons.YesNo) == DialogResult.Yes) { System.Diagnostics.Process.Start("QQ2010SP3.1.exe");//启动刚下载的程序 this.Close(); } else { this.Close(); ; } } void wc_DownloadProgressChanged(object sender, System.Net.DownloadProgressChangedEventArgs e) { //throw new NotImplementedException(); progressBar1.Value = e.ProgressPercentage;//将progressbar的值设为下载的百分比 } } } 这是一个简单的下载程序例子,没写罗货通用的方法了..可以用于检查更新..有兴趣的可以做下.. |
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