WebBrowser webbrowser;
        public Form2()
        {
            InitializeComponent();


            webbrowser = new WebBrowser();
            webbrowser.Navigate("http://www.tt336.net/forum-136-1.html");
            webbrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webbrowser_DocumentCompleted);
        }

        void webbrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            if (webbrowser.ReadyState == WebBrowserReadyState.Complete)
            {
                HtmlElementCollection c = webbrowser.Document.GetElementsByTagName("option");
            }
        }