Let's say I have this document.

<a:Root>
    <a:A>
        <title><a:B/></title>
        <a:C>
            <item><a:D/></item>
        </a:C>
    </a:A>
</a:Root>

And I have an XmlNode set to the <a:A> element.

If I say

A.SelectNodes( "//a:*", namespaceManager )

I get B, C, and D. But I don't want D because it's nested in another "a:" element.

If I say

A.SelectNodes( "//a:*[not(ancestor::a:*)]", namespaceManager )

of course, I get nothing, since both A and its parent are in the "a" namespace.

How can I select just B and C, that is, the shallowest children matching the namespace?

Thanks.

Note, this is XPath 1.0 (.NET 2), so I can't use in-scope-prefixes (which it appears would help).