/// <summary>
        /// WebBrowser页面加载完成事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void myWebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            switch (e.Url.AbsoluteUri)
            {
                case "127.0.0.1/test2_2.aspx":
                    addFunction(set1 );
                    break;
                default:
                    break;
            }

        }



        /// <summary>
        /// 获取指定的页面框架
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        HtmlDocument getDom(   string url)
        {

            try
            {
                if (url == "")
                {
                    ////这个位置特别容易报错
                    return myWebBrowser.Document;
                }
                 if (myWebBrowser.Document.Url.AbsoluteUri == url) ////这个位置特别容易报错
                {
                    return myWebBrowser.Document;
                }
                foreach (HtmlWindow item in myWebBrowser.Document.Window.Frames)
                {
                    if (item.Document.Url.AbsoluteUri == url)
                    {
                        return item.Document;
                    }
                }
                return null;

            }
            catch (Exception e)
            {
                return null;
            }
        }