using System;
using System.IO;
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()
{
XmlDocument document = new XmlDocument();
document.Load("domainBooks.xml");
XPathNavigator navigator = document.CreateNavigator();
navigator.MoveToChild("bookstore", "http://www.domain.com/books");
navigator.MoveToChild("book", "http://www.domain.com/books");
navigator.MoveToChild("price", "http://www.domain.com/books");
navigator.InsertAfter("100 ");
navigator.MoveToParent();
Console.WriteLine(navigator.OuterXml);
}
}