How do I use XPath with a default namespace with no prefix?

Question

What is the XPath (in C# API to XDocument.XPathSelectElements(xpath, nsman) if it matters) to query all MyNodes from this document?

Answer 1

Example with Xpath 2.0 + a library :

using Wmhelp.XPath2;

doc.XPath2SelectElements("/*:configuration/*:MyNode");

See :

XPath and XSLT 2.0 for .NET?