Webbrowser 在web项目中的使用

 1 ??2 ????????string htmlstr = string.Empty; 3 [STAThread] 4 ????????public string GetHtmlByWeb(string url) 5 ????????{ 6 ????????????try 7 ????????????{ 8 ?9 ????????????????RunWithSingleThread(url);10 ????????????????DateTime dtime = DateTime.Now;11 ????????????????double timespan = 0;12 //等待 页面加载完毕 并获取到参数13 ????????????????while (string.IsNullOrWhiteSpace(htmlstr) && timespan < 10)14 ????????????????{15 ????????????????????DateTime time2 = DateTime.Now;16 ????????????????????timespan = (time2 - dtime).TotalSeconds;17 ????????????????}18 ????????????????// double lo = DateTime.Now.Subtract(dtime).TotalSeconds;19 ????????????}20 ????????????catch (Exception)21 ????????????{22 ??????????????23 ????????????}24 ????????????finally25 ????????????{26 ????????????????if (t != null && t.ThreadState == ThreadState.Running)27 ????????????????{28 ????????????????????t.Abort();29 ????????????????}30 ????????????}31 ???????????32 ????????????return htmlstr;33 ????????}34 35 36 //线程37 ?private Thread t;38 //异步执行WebBrowser39 ????????public void RunWithSingleThread(object url)40 ????????{41 ????????????ParameterizedThreadStart ps = new ParameterizedThreadStart(GetHtmlWithBrowser);42 ????????????t = new Thread(ps);43 ????????????t.IsBackground = true;44 ????????????t.ApartmentState = ApartmentState.STA;45 ????????????t.Start(url);46 ????????} ?47 48 private WebBrowser wb;49 ????????private void GetHtmlWithBrowser(object url)50 ????????{51 ????????????htmlstr = string.Empty;52 53 ????????????wb = new WebBrowser();54 ????????????wb.ScriptErrorsSuppressed = true; ?//防止脚本异常跳出弹窗55 ????????????wb.ScrollBarsEnabled = true;56 ????????????wb.Navigate(url.ToString());57 ????????????58 ????????????wb.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(DocumentCompleted);59 ????????????while (wb.ReadyState != System.Windows.Forms.WebBrowserReadyState.Complete)60 ????????????{61 ????????????????System.Windows.Forms.Application.DoEvents(); //避免假死，若去掉则可能无法触发 DocumentCompleted 事件。62 ????????????}63 64 ????????}65 //获取内容66 ?public void DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)67 ????????{68 ????????????htmlstr = wb.Document.Body.InnerHtml;69 70 ????????}