Search for nodes having a certain attribute with htmlagilitypack

问题

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?

回答1:

You could try to just loop over it :

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

来源：https://stackoverflow.com/questions/22933368/search-for-nodes-having-a-certain-attribute-with-htmlagilitypack