Webbrowser与HtmlAgility的结合

神，这么复杂的标题~~
            HtmlAgilityPack.HtmlDocument htmlDocument = new HtmlAgilityPack.HtmlDocument();
            mshtml.HTMLDocument htmldocument = (mshtml.HTMLDocument)webBrowser.Document.DomDocument;
            string temp = htmldocument.documentElement.outerHTML;
            byte[] buffer = Encoding.GetEncoding(webBrowser.Document.Encoding).GetBytes(temp);
            MemoryStream ms = new MemoryStream(buffer);
            htmlDocument.Load(ms, Encoding.GetEncoding(webBrowser.Document.Encoding));