using System;

using System.Xml.Linq;

using System.Xml;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var current = new XElement("item", new XAttribute("name","current"),

            new XElement("item", new XAttribute("name","source" ),new XAttribute("value","file1")));

    var previous = new XElement("item",

    }

}