How to populate XDocument from a String in C# ?

using System;
using System.Xml.Linq;

namespace ACCode
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = "<Root>AC Code Input</Root>";
            XDocument xdocument = XDocument.Parse(input);
            Console.WriteLine(xdocument);
            Console.ReadLine();
        }
    }
}