使用HTMLAgillity Pack输出格式化列表

Question

嗨，我有以下HTML列表：

<ol><li>klndzldgnldzl</li>
    <li>zdkgnlkzdngzlkdgn</li>
    <li>dzlknglkdznglkzdn</li></ol>

当前，我正在使用HTMLAgillityPack将列表格式化为以下格式：

  * klndzldgnldzl
  * zdkgnlkzdngzlkdgn
  * dzlknglkdznglkzdn

以下是我用来格式化列表的方法：

public static string ConvertToPlainText(string html)
        {
            HtmlDocument doc = new HtmlDocument();
            doc.LoadHtml(html);

            StringWriter sw = new StringWriter();
            ConvertTo(doc.DocumentNode, sw);
            sw.Flush();
            return sw.ToString();
        }


        /// <summary>
        /// Count the words.
        /// The content has to be converted to plain text before (using ConvertToPlainText).
        /// </summary>
        /// <param name="plainText">The plain text.</param>
        /// <returns></returns>
        public static int CountWords(string plainText)
        {
            return !String.IsNullOrEmpty(plainText) ? plainText.Split(' ', '\n').Length : 0;
        }


        public static string Cut(string text, int length)
        {
            if (!String.IsNullOrEmpty(text) && text.Length > length)
            {
                text = text.Substring(0, length - 4) + " ...";
            }
            return text;
        }


        private static void ConvertContentTo(HtmlNode node, TextWriter outText)
        {
            foreach (HtmlNode subnode in node.ChildNodes)
            {
                ConvertTo(subnode, outText);
            }
        }


        private static void ConvertTo(HtmlNode node, TextWriter outText)
        {
            string html;
            switch (node.NodeType)
            {
                case HtmlNodeType.Comment:
                    // don't output comments
                    break;

                case HtmlNodeType.Document:
                    ConvertContentTo(node, outText);
                    break;

                case HtmlNodeType.Text:
                    // script and style must not be output
                    string parentName = node.ParentNode.Name;
                    if ((parentName == "script") || (parentName == "style"))
                        break;

                    // get text
                    html = ((HtmlTextNode)node).Text;

                    // is it in fact a special closing node output as text?
                    if (HtmlNode.IsOverlappedClosingElement(html))
                        break;

                    // check the text is meaningful and not a bunch of whitespaces
                    if (html.Trim().Length > 0)
                    {
                        outText.Write(HtmlEntity.DeEntitize(html));
                    }
                    break;

                case HtmlNodeType.Element:
                    switch (node.Name)
                    {

                        case "li":
                              outText.Write("\r\n* "); // FORMATS THE LIST
                          //  outText.Write("\r\n");
                            break;
                        case "p":
                            // treat paragraphs as crlf
                            outText.Write("\r\n");
                            break;
                        case "br":
                            outText.Write("\r\n");
                            break;
                    }

                    if (node.HasChildNodes)
                    {
                        ConvertContentTo(node, outText);
                    }
                    break;
            }
        }

---

string s = "<ol><li>klndzldgnldzl</li><li>zdkgnlkzdngzlkdgn</li <li>dzlknglkdznglkzdn</li></ol>"
var lala  = ConvertToPlainText(s); // Formated Text

我的问题是有没有办法以以下格式输出列表：

1. klndzldgnldzl
2. zdkgnlkzdngzlkdgn
3. dzlknglkdznglkzdn

我可以想象在某个地方需要运行for循环槽，但在HTMLAgillity包中我没有足够的深入知识来实现​​这一目标。