Replace the attributes of this element with the specified content in CSharp

using System;/*  w ww.  j a  v a2  s  .  c  om*/
using System.Linq;
using System.Xml.Linq;
using System.Collections;
using System.Collections.Generic;


public class MainClass{
   public static void Main(){
        XElement root = new XElement("Root",
            new XAttribute("Att1", 1),
            new XAttribute("Att2", 2),
            new XAttribute("Att3", 3)
        );
        root.ReplaceAttributes(
            new XAttribute("NewAtt1", 101)
        );
        Console.WriteLine(root);
   }
}