XML C#

using System;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Xml.XPath;
public class MainClass
{
    public static void Main()
    {
        XPathDocument document = new XPathDocument("books.xml");
        XPathNavigator navigator = document.CreateNavigator();
        XPathNodeIterator nodes = navigator.SelectDescendants("book", "", false);
        while (nodes.MoveNext())
        {
            XPathNavigator navigator2 = nodes.Current.Clone();
            navigator2.MoveToFirstAttribute();
            Console.WriteLine("{0} = {1}", navigator2.Name, navigator2.Value);
            while (navigator2.MoveToNextAttribute())
            {
                Console.WriteLine("{0} = {1}", navigator2.Name, navigator2.Value);
            }
        }
    }
}