Test current node with XPath

Question

.NET's XPath functions offer the usual features like SelectSingleNode and SelectNodes. They can only find child nodes specified by an XPath query.

But what if I want to test the current node whether it matches a given XPath specification? How does that work?

Let's say I have an HTML document where I have found a table node.

<table>
  <tr>
    <td>...</td>
  <tr>
  <tr class="abc">
    <td>...</td>
  </tr>
</table>

I can find all tr elements from there. Once I've reached a tr element (I could also get there through navigation, not XPath), I'd like to know whether it matches certain criteria. These are best specified as an XPath string.

This is what I'm looking for:

XmlNode trNode = ...;
bool result = trNode.Matches("tr[@class='abc']");

Is this supported by .NET's (very limited) XPath functionality? Or, if that makes a difference, the HtmlAgilityPack package?

Answer 1

[...] what if I want to test the current node whether it matches a given XPath specification?

You can check that with the self:: axis.
So if your current node is tr and you want to check if the current tr element is one with a class attribute with the value abc, use the following XPath expression:

self::tr[@class='abc']

I guess that this is what you want, isn't it?