问题
Can Html Agility Pack be used to parse an html string fragment?
Such As:
var fragment = "<b>Some code </b>";
Then extract all <b> tags? All the examples I seen so far have been loading like html documents.
回答1:
If it's html then yes.
string str = "<b>Some code</b>";
// not sure if needed
string html = string.Format("<html><head></head><body>{0}</body></html>", str);
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
// look xpath tutorials for how to select elements
// select 1st <b> element
HtmlNode bNode = doc.DocumentNode.SelectSingleNode("b[1]");
string boldText = bNode.InnerText;
回答2:
I dont think this is really the best use of HtmlAgilityPack.
Normally I see people trying to parse large amounts of html using regular expressions and I point them towards HtmlAgilityPack but in this case I think it would be better to use a regex.
Roy Osherove has a blog post describing how you can strip out all the html from a snippet:
- http://weblogs.asp.net/rosherove/archive/2003/05/13/6963.aspx
Even if you did get the correct xpath with Mika Kolari's sample this would only work for a snippet with a <b> tag in it and would break if the code changed.
来源：https://stackoverflow.com/questions/2535878/can-i-use-html-agility-pack-to-parse-html-fragment