c# - Selecting attribute values with html Agility Pack

Question

I'm trying to retrieve a specific image from a html document, using html agility pack and this xpath:

//div[@id='topslot']/a/img/@src

As far as I can see, it finds the src-attribute, but it returns the img-tag. Why is that?

I would expect the InnerHtml/InnerText or something to be set, but both are empty strings. OuterHtml is set to the complete img-tag.

Are there any documentation for Html Agility Pack?

Answer 1

You can directly grab the attribute if you use the HtmlNavigator instead.

//Load document from some html string
HtmlDocument hdoc = new HtmlDocument();
hdoc.LoadHtml(htmlContent);

//Load navigator for current document
HtmlNodeNavigator navigator = (HtmlNodeNavigator)hdoc.CreateNavigator();

//Get value from given xpath
string xpath = "//div[@id='topslot']/a/img/@src";
string val = navigator.SelectSingleNode(xpath).Value;