using System;

using System.Xml.Linq;

using System.Xml;

​

public class Program

{

    public static void Main()

    {

            var xmlstr = @"<realRoot>

  <node>

    <desiredRoot>

      <rootChild/>

      <nestedChild/>

      <rootChild/>

    </desiredRoot>

  </node>

 </realRoot>";

            var xd = XDocument.Parse(xmlstr);

            var el = xd.Root.Element("node").Descendants();

            foreach (var x in el)

                Console.WriteLine("{0} [{1}]", x.Name, x.NodeType);

    }

}