Html Agility Pack/SgmlReader 解析html HtmlDocument htmlDoc = new HtmlDocument();//输出成xml格式htmlDoc.OptionOutputAsXml = true;/ 加载html内容htmlDoc.LoadHtml(@"
     
               
       
                 
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"); // 将输出结果保存到字符串流中  StringBuilder sbXml = new StringBuilder();  StringWriter sw = new StringWriter(sbXml);  htmlDoc.Save(sw); Console.WriteLine(sbXml.ToString());StringBuilder sbXml = new StringBuilder();            StringWriter sw = new StringWriter(sbXml);            XmlTextWriter tw = new XmlTextWriter(sw);            HtmlWeb htmlWeb = new HtmlWeb();            htmlWeb.LoadHtmlAsXml("http://htmlagilitypack.codeplex.com/", tw);            Console.WriteLine(sbXml.ToString());