Simple XmlExpando

XmlExpando

using System;
using System.Collections.Generic;
using System.Dynamic;
using System.Linq;
using System.Xml.Linq;

namespace Expando
{
    public static class XmlExpando
    {
        public static dynamic Expand(this XDocument xDocument)
        {
            if (xDocument == null)
                throw new ArgumentNullException("xDocument");

            if (xDocument.Root == null)
                throw new ArgumentException("Document contains no elements", "xDocument");

            var xmlExpando = new ExpandoObject();
            ((IDictionary<string, object>)xmlExpando)[xDocument.Root.Name.LocalName] = new ExpandoObject();
            ProcessChildren(((IDictionary<string, object>)xmlExpando)[xDocument.Root.Name.LocalName], xDocument.Root);

            return xmlExpando;
        }

        private static void ProcessChildren(dynamic xmlExpando, XElement xElement)
        {
            if (xElement.HasAttributes)
            {
                xmlExpando.Attributes = xElement.Attributes().Select(attribute => new { Name = attribute.Name.LocalName, Value = attribute.Value }).ToDictionary(k => k.Name, v => v.Value);
            }
            if (xElement.HasElements)
            {
                var indexableXmlExpando = (IDictionary<string, object>)xmlExpando;
                foreach (var childXElement in xElement.Elements())
                {
                    indexableXmlExpando[childXElement.Name.LocalName] = new ExpandoObject();
                    ProcessChildren(indexableXmlExpando[childXElement.Name.LocalName], childXElement);
                }
            }
            else
            {
                xmlExpando.Value = xElement.Value;
            }
        }
    }
}