c# - 使用 HTMLAgilityPack 将孤立文本放入标签中

Question

如何将一段html的语法转换成这样

<div>
     some text
     <br/>
     goes in here
     <br/>
     with only br tags
     <br/>
     to separate it
     <br/>
</div>

为此

<div>
     <p>some text</p>
     <p>goes in here</p>
     <p>with only br tags</p>
     <p>to separate it</p>
</div>

在 C# 中使用 HTML Agility Pack？

Answer 1

一种可能的方式:

var html = @"<div>
     some text
     <br/>
     goes in here
     <br/>
     with only br tags
     <br/>
     to separate it
     <br/>
</div>";
var doc = new HtmlDocument();
doc.LoadHtml(html);
var div = doc.DocumentNode.SelectSingleNode("div");
//select all non-empty text nodes within <div>
var texts = div.SelectNodes("./text()[normalize-space()]");
foreach (var text in texts)
{
    //remove current text node
    text.Remove();
    //replace with : <p>current text node content</p>
    var p = doc.CreateElement("p");
    p.AppendChild(doc.CreateTextNode(text.InnerText));
    div.PrependChild(p);
}
//remove all <br/> tags within <div>
foreach (var selectNode in div.SelectNodes("./br"))
{
    selectNode.Remove();
}
//print result
Console.WriteLine(doc.DocumentNode.OuterHtml);