什么C＃经常EX pression将提取下列内容？ [英] What C# regular expression would extract the following content?

问题描述

我有以下内容，

  <li id="24">
        <span class="button theme">
              <span>abc</span>
              <div>nanananana</div>
        </span>
        <section>
              content1
        </section>
  </li>

  <li id="25">
        <span class="button theme">
              <span>xyz</span>
              <div>blablabla</div>
        </span>
        <section>
              content2
        </section>
  </li>

我要像下面的内容，

I want the content like the following,

  24 abc content1
  25 xyz content2

我怎样写常恩pression在C＃中实现这一目标？

How do I write the regular expression to achieve this in C#?

推荐答案

使用一个真正的HTML解析器如 HtmlAgilityPack 解析一个html。正则表达式是没有很好地分析HTML。请参阅<一href="http://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags">RegEx符合开放式标签，除了XHTML自包含的代码

Use a real html parser like HtmlAgilityPack to parse an html. Regex is not well for parsing html. See RegEx match open tags except XHTML self-contained tags

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html);
var result = doc.DocumentNode.Descendants("li")
                .Select(n => new
                {
                    Id = n.Attributes["id"].Value,
                    SpanValue = n.Element("span").Element("span").InnerText,
                    SectionVal = n.Element("section").InnerText.Trim(),
                })
                .ToList();

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