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() {

        string[] names = { "J", "P", "G", "P" };

        XElement xNames = new XElement("Beatles",
               from n in names
               select new XElement("Name", n));
        names[3] = "R";
        Console.WriteLine(xNames);

    }
}

    

   
 

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() {
        XElement name = new XElement("Name", "Joe");

        Console.WriteLine(name.ToString());

    }
}

    

   
 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;
public class MainClass {
    public static void Main() {
        var bench = new XElement("bench",
                      new XElement("A",
                        new XElement("B", "H"),
                        new XElement("B", "R")
                      ),
                      new XElement("A",
                        new XElement("B", "S"),
                        new XElement("C", "N")
                      ),
                      new XComment("comment")
                    );
        foreach (XElement e in bench.Elements())
            Console.WriteLine(e.Name + "=" + e.Value);
    }
}

    

   
 

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() {
        XProcessingInstruction procInst;
        XDocument xDocument = new XDocument(
          new XElement("Books"),
          procInst = new XProcessingInstruction("Book", "out-of-print"));

        Console.WriteLine(xDocument);

        procInst.Target = "BookContactManager";
        procInst.Data = "update";
        Console.WriteLine(xDocument);
    }
}

    

   
 

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() {
        XDocumentType docType;
        XDocument xDocument = new XDocument(docType = new XDocumentType("Books", null,"Books.dtd", null),
          new XElement("Books"));
        Console.WriteLine("Before updating document type:");
        Console.WriteLine(xDocument);

        docType.Name = "MyBooks";
        docType.SystemId = "http://www.yoursite.com/DTDs/MyBooks.DTD";
        docType.PublicId = "-//DTDs//TEXT Book Participants//EN";

        Console.WriteLine(xDocument);
    }
}

    

   
 

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() {
        XElement firstParticipant;
        XDocument xDocument = new XDocument(
          new XElement("Books", firstParticipant =
            new XElement("Book",
              new XComment("This is a new author."),
              new XAttribute("type", "Author"),
              new XElement("FirstName", "J"),
              new XElement("LastName", "R"))));

        Console.WriteLine(xDocument);
        firstParticipant.Element("FirstName").Value = "J";
        firstParticipant.Nodes().OfType<XComment>().Single().Value ="LINQ";
        ((XElement)firstParticipant.Element("FirstName").NextNode).Nodes().OfType<XText>().Single().Value = "R";
        Console.WriteLine(xDocument);

    }
}

    

   
 

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();
        XDocumentType documentType = new XDocumentType("Books", null, "Books.dtd", null);
        xDocument.Add(documentType, new XElement("Books"));
        Console.WriteLine(xDocument);
    }
}