using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Xml;
using System.Xml.Linq;
public class MainClass {
public static void Main() {
XDocument xDocument = new XDocument(
new XElement("Books",
new XElement("Book",
new XAttribute("type", "Author"),
new XElement("FirstName", "J"),
new XElement("LastName", "R")),
new XElement("Book",
new XAttribute("type", "Author"),
new XElement("FirstName", "E"),
new XElement("LastName", "B"))));
IEnumerable elements = xDocument.Element("Books").Descendants("FirstName");
foreach (XElement element in elements) {
Console.WriteLine("Source element: {0} : value = {1}",
element.Name, element.Value);
}
foreach (XElement element in elements.AncestorsAndSelf()) {
Console.WriteLine("Ancestor element: {0}", element.Name);
}
}
}