winform中如何实现自动点击webbrowser弹出对话框中的确定按钮

Q:winform中如何实现自动点击webbrowser弹出对话框中的确定按钮

A：  

// using mshtml;
         // using SHDocVw;
         private   void  Form1_Load( object  sender, EventArgs e)
         ... {
             this .webBrowser1.Navigate( " http://localhost:28512/WebSite2/Default.aspx " );
            SHDocVw.WebBrowser wb  =   this .webBrowser1.ActiveXInstance  as  SHDocVw.WebBrowser;
            wb.NavigateComplete2  +=   new  SHDocVw.DWebBrowserEvents2_NavigateComplete2EventHandler(wb_NavigateComplete2);
             
        }

         void  wb_NavigateComplete2( object  pDisp,  ref   object  URL)
         ... {
            mshtml.IHTMLDocument2 doc  =  ( this .webBrowser1.ActiveXInstance  as  SHDocVw.WebBrowser).Document  as  mshtml.IHTMLDocument2;
            doc.parentWindow.execScript( " function alert(str){return ''} " ,  " javascript " );
        }