using System;

using System.IO;

using System.Xml.Serialization;

​

public class Program

{

    public static void Main()

    {

        var cc = new CreateContact

        {

            Contact = new Contact

            {

                Firstname = "Simon",

                Lastname = "Test",

                Email = "stest@gmail.com",

                Phone = "09088408501",

                Title = "Mr"

            }

        };

​

        var xsn = new XmlSerializerNamespaces();

        xsn.Add("a", "http://foo.co.uk/Contact");

​

        var xs = new XmlSerializer(typeof (CreateContact));

​

        using (var stringWriter = new StringWriter())

        {

            xs.Serialize(stringWriter, cc, xsn);

            Console.WriteLine(stringWriter.ToString());

        }

    }

}

​

[XmlRoot(ElementName = "CreateContact", Namespace = "http://foo.co.uk")]

public class CreateContact

{

    [XmlElement(ElementName = "contact")]

    public Contact Contact { get; set; }

}

​

[XmlRoot("contact", Namespace = "http://foo.co.uk/Contact")]

public class Contact

{

    public string Email { get; set; }

    public string Firstname { get; set; }

    public string Lastname { get; set; }

    public string Phone { get; set; }

    public string Title { get; set; }

}