HTMLAgilityPack iterate all text nodes only

问题

Here is a HTML snippet and all I want is to get only the text nodes and iterate them. Pls let me know. Thanks.

<div>
   <div>
      Select your Age:
      <select>
          <option>0 to 10</option>
          <option>20 and above</option>
      </select>
   </div>
   <div>
       Help/Hints:
       <ul>
          <li>This is required field.
          <li>Make sure select the right age.
       </ul>
      <a href="#">Learn More</a>
   </div>
</div>

Result:

Select your Age:
0 to 10
20 and above
Help/Hints:
This is required field.
Make sure select the right age.
Learn More

回答1:

Something like this:

    HtmlDocument doc = new HtmlDocument();
    doc.Load(yourHtmlFile);

    foreach (HtmlNode node in doc.DocumentNode.SelectNodes("//text()[normalize-space(.) != '']"))
    {
        Console.WriteLine(node.InnerText.Trim());
    }

Will output this:

Select your Age:
0 to 10
20 and above
Help/Hints:
This is required field.
Make sure select the right age.
Learn More

回答2:

I tested @Simon Mourier's answer on the Google home page and got lots of CSS and Javascript, so I added an extra filter to remove it:

    public string getBodyText(string html)
    {
        string str = "";

        HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
        doc.LoadHtml(html);

        try
        {
            // Remove script & style nodes
            doc.DocumentNode.Descendants().Where( n => n.Name == "script" || n.Name == "style" ).ToList().ForEach(n => n.Remove());

            // Simon Mourier's Answer
            foreach (HtmlNode node in doc.DocumentNode.SelectNodes("//text()[normalize-space(.) != '']"))
            {
                str += node.InnerText.Trim() + " ";
            }
        }
        catch (Exception)
        {
        }

        return str;
    }

来源：https://stackoverflow.com/questions/6344771/htmlagilitypack-iterate-all-text-nodes-only

标签

html-agility-pack