attributeshtml-agility-packselectnodes

HtmlAgilityPack SelectNodes only where an attribute is missing or not defined

I have an HTML document which has different tables in it.

Simple examples include 2 types:

  1. <table>
  2. <table class="footer" id="some-x">

To select all nodes where the table has an attribute called id I can use

DocumentNode.SelectNodes("//table[@id]")

What I'm tying to figure out of the opposite, how do I select nodes where the tables do NOT have any attribute called id (or any class, i.e just bare tags) (example 1)

Solution

  • You can use not() to select tables that don't have any id attribute :

    DocumentNode.SelectNodes("//table[not(@id)]")

    ...or to select tables without any attribute at all :

    DocumentNode.SelectNodes("//table[not(@*)]")