I have only seen examples on how to search for nodes where attributes have or contain certain values but I cannot find one where you search for nodes where the attribute exists to start with.

How is that done?

有帮助吗?

解决方案

You could try to just loop over it :

HtmlAgilityPack.HtmlDocument doc = htmlWeb.Load("somewebsite.org");    
foreach(HtmlNode matchedNode in doc.DocumentNode.SelectNodes("//*[@attrX]") {
    /* ... */
} 
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