this.webBrowser1.Navigate("http://www.baidu.com/");

            this.webBrowser1.Navigated += (object sender, WebBrowserNavigatedEventArgs e) 
                => { string html = this.webBrowser1.DocumentText; };

       static void Main(string[] args)
        {
            string stUrl = "http://flights.ctrip.com/booking/bjs-sha----adu-1/?dayoffset=7&ddate1=2013-01-12&dcityname1=%u5317%u4eac&acityname1=%u4e0a%u6d77";

            WebClient wc = new WebClient();
            string html = wc.DownloadString("fly.htm");

            string regex = @"[\s\S]*?<strong class="".*"">([\s\S]*?)</strong>[\s\S]*?<span class="".*""></span>([\s\S].*)<label style="".*"">/([\s\S].*)</label>[\s\S]*?<li><strong>更改条件：</strong><span>(.*?)</span></li><li><strong>退票条件：</strong><span>(.*?)</span></li><li><strong>签转条件：</strong><span>(.*?)</span></li>";

            MatchCollection mc = Regex.Matches(html, regex);

            Console.WriteLine("正在提取数据.....");
            XDocument xdoc = new XDocument();
            XElement xRoot = new XElement("Root");
            xdoc.Add(xRoot);

            foreach (Match m in mc)
            {
                if (m.Success)
                {
                    XElement FlyInfo = new XElement("FlyInfo");
                    XElement xAirLine = new XElement("AirLine");
                    XElement xSeat = new XElement("Seat");
                    XElement xChuan = new XElement("Chuan");
                    XElement xGai = new XElement("Gai");
                    XElement xTui = new XElement("Tui");
                    XElement xQian = new XElement("Qian");

                    xAirLine.Value = m.Groups[1].Value;
                    xSeat.Value = m.Groups[2].Value;
                    xChuan.Value = m.Groups[3].Value;
                    xGai.Value = m.Groups[4].Value;
                    xTui.Value = m.Groups[5].Value;
                    xQian.Value = m.Groups[6].Value;

                    FlyInfo.Add(xAirLine, xSeat, xChuan, xGai, xTui, xQian);

                    xRoot.Add(FlyInfo);
                }
            }
            xdoc.Save("fly.xml");

            Console.WriteLine("提取成功。按任意键退出");
            Console.ReadKey();
        }

    using System.Windows.Forms;
    class Program
    {
        
        static void Main(string[] args)
        {
            System.Threading.Thread t = new System.Threading.Thread(ThreadStart);
            t.SetApartmentState(System.Threading.ApartmentState.STA);
            t.Start();

            Console.Read();
        }

        static string html = string.Empty;
        private static void ThreadStart()
        {
            WebBrowser browser = new WebBrowser();
            browser.Dock = DockStyle.Fill;
            browser.Name = "webBrowser";
            browser.ScrollBarsEnabled = false;
            browser.TabIndex = 0;
            browser.Url = new Uri("http://www.microsoft.com");
            browser.Navigated += browser_Navigated;

            Form form = new Form();
            form.WindowState = FormWindowState.Minimized;
            form.Controls.Add(browser);
            form.Name = "Browser";

            Application.Run(form);
        }

        static void browser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
        {
            html = (sender as WebBrowser).DocumentText;
        }
    }