XPathNavigator.PrependChild returns XmlWriter to create a new child node
Imports System Imports System.Xml Imports System.Xml.XPath Public Class MainClass Public Shared Sub Main() Dim document As XmlDocument = New XmlDocument() document.Load("domainBooks.xml") Dim navigator As XPathNavigator = document.CreateNavigator() navigator.MoveToChild("bookstore", "http://www.domain.com/books") navigator.MoveToChild("book", "http://www.domain.com/books") Dim pages As XmlWriter = navigator.PrependChild() pages.WriteElementString("pages", "100") pages.Close() Console.WriteLine(navigator.OuterXml) End Sub End Class