Use AddFirst to add an element to xml document : AddFirst : XML LINQ C# Source Code

    
 

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.Linq;
using System.Reflection;
using System.Xml.Linq;

class Program {
    static void Main(string[] args) {
        XElement xml = XElement.Load("Employee.xml");
        xml.AddFirst(new XElement("person",
                        new XElement("id", 5),
                        new XElement("firstname", "Tom"),
                        new XElement("lastname", "Cruise"),
                        new XElement("idrole", 1)));
        Console.WriteLine(xml);
    }
}