Create XPathNavigator object by calling CreateNavigator of XmlDocument : XmlPathNavigator « XML « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. XML
3. XmlPathNavigator

using System;
using System.Xml.XPath;
using System.Xml;

class MainClass
{
  static void Main(string[] args)
    {
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(@"c:\books.xml");
    
        XPathNavigator nav = xmlDoc.CreateNavigator();

        Console.WriteLine("Author First Name");
        XPathNodeIterator itrator = nav.Select("descendant::first-name");         
        while( itrator.MoveNext() )
        {
            Console.WriteLine(itrator.Current.Value.ToString());
        }
    }
}