c# Winform和webbrower控件交互有关问题 急问

c# Winform和webbrower控件交互问题 急问
winform程序里有webbrower控件,嵌套这一个web程序，现在要想再web程序做的操作能让winform知道，
或者webbrower控件里的web程序如何调用winform里的方法。？
有demo最好了。

谢谢各位，急求

[解决办法]

C# code

 public Form27()        {            InitializeComponent();            this.webBrowser1.Navigate("http://localhost:9584/");            this.webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);        }        void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)        {            //throw new NotImplementedException();            System.Windows.Forms.HtmlDocument HTMLDocument = this.webBrowser1.Document;            System.Windows.Forms.HtmlElement closeBtn = HTMLDocument.GetElementById("ctl00$MainContent$btnClick"); //html中元素标签            closeBtn.MouseDown += new HtmlElementEventHandler(closeWindw);// // HTML点击按钮        }        void closeWindw(object o, EventArgs  e)        {            this.WindowState = FormWindowState.Minimized;        }
[解决办法]
http://blog.csdn.net/zzzzzzzert/article/details/7787481