string htmlstr = string.Empty;

 [STAThread]

         public string GetHtmlByWeb(string url)

         {

             try

             {

                 RunWithSingleThread(url);

                 DateTime dtime = DateTime.Now;

                 double timespan = ;

 //等待 页面加载完毕 并获取到参数

                 while (string.IsNullOrWhiteSpace(htmlstr) && timespan < )

                 {

                     DateTime time2 = DateTime.Now;

                     timespan = (time2 - dtime).TotalSeconds;

                 }

                 // double lo = DateTime.Now.Subtract(dtime).TotalSeconds;

             }

             catch (Exception)

             {

             }

             finally

             {

                 if (t != null && t.ThreadState == ThreadState.Running)

                 {

                     t.Abort();

                 }

             }

             return htmlstr;

         }

 //线程

  private Thread t;

 //异步执行WebBrowser

         public void RunWithSingleThread(object url)

         {

             ParameterizedThreadStart ps = new ParameterizedThreadStart(GetHtmlWithBrowser);

             t = new Thread(ps);

             t.IsBackground = true;

             t.ApartmentState = ApartmentState.STA;

             t.Start(url);

         }  

 private WebBrowser wb;

         private void GetHtmlWithBrowser(object url)

         {

             htmlstr = string.Empty;

             wb = new WebBrowser();

             wb.ScriptErrorsSuppressed = true;  //防止脚本异常跳出弹窗

             wb.ScrollBarsEnabled = true;

             wb.Navigate(url.ToString());

             wb.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(DocumentCompleted);

             while (wb.ReadyState != System.Windows.Forms.WebBrowserReadyState.Complete)

             {

                 System.Windows.Forms.Application.DoEvents(); //避免假死，若去掉则可能无法触发 DocumentCompleted 事件。

             }

         }

 //获取内容

  public void DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)

         {

             htmlstr = wb.Document.Body.InnerHtml;

         }