WebBrowser 多线程 DocumentCompleted 和定时器

 

备忘

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using Fizzler;
using Fizzler.Systems;
using Fizzler.Systems.HtmlAgilityPack;
using Fizzler.Systems.XmlNodeQuery;



namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Uri url = new Uri("http://www.c-sharpcorner.com/forums/Search/?forum=0&searchtype=0&searchtext=");
            runBrowserThread(url);
        }

      static  private void runBrowserThread(Uri url)
        {
            var th = new Thread(() =>
            {
                var br = new WebBrowser();
                br.DocumentCompleted += browser_DocumentCompleted;
                br.Navigate(url);
           
                TimerCallback timerDelegate = new TimerCallback(CheckStatus);
            //System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer(timerDelegate, br.DocumentText, 1000, 1000);
                System.Windows.Forms.Timer timers = new System.Windows.Forms.Timer();
                timers.Enabled = true;
                timers.Interval = 1000;
                timers.Tick += delegate(object o, EventArgs args)
                {
                    CheckStatus(br.DocumentText);
                };
                timers.Start();
                Application.Run();
                //Application.DoEvents();
               
            });
            th.SetApartmentState(ApartmentState.STA);
            th.Start();
        }

      static void CheckStatus(Object state)
      {

          try
          {

              string html = state.ToString();
          
             // Console.WriteLine(html);
              if (checklistbape(html))
              {
                  //这里主要用来进行ajax检测
                  //检测成功后，对内容进行处理
                  //定时器对页面状态进行轮训和判断进行那个操作
                  Console.WriteLine("OK");

                  // Application.ExitThread();   // Stops the thread
              }
              else
              {
                  Console.WriteLine("= =");
              }
          }
          catch (Exception ex)
          {
              string ss = "";
          }
      }
      private static bool checklistbape(string htmltext)
      {
          var html = new HtmlAgilityPack.HtmlDocument();
          html.LoadHtml(htmltext);
          var document = html.DocumentNode;
          var urlnode = document.QuerySelectorAll(".latestArticle>li").ToList();
          var next = document.QuerySelectorAll(".pagingSpritIcons").ToList();
          if (urlnode.Count == 0 || next.Count == 0)
          {
              return false;
          }
          else
          {
              return true;
          }
      }
     static   void browser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            var br = sender as WebBrowser;
            if (br.Url == e.Url)
            {
                Console.WriteLine("Natigated to {0}", e.Url);
               // Application.ExitThread();   // Stops the thread
            }
        }

    }
}