C#

public class person
    {
        public person() { ;}  //default constructor
        public string firstname;
        public string lastname;
        public int Age;

    }

    public class persons
    {
        public persons() { }
        public ArrayList personlist = new ArrayList();
    }

<pre>[STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());


            person p = new person();

            p.firstname = "Tim";
            p.lastname = "Duncan";
            p.Age = 34;

            persons ps = new persons();
            ps.personlist.Add(p);

            FileStream fs = File.Create("C:\\Temp\\test.xml");

            XmlSerializer xs = new XmlSerializer(typeof(ArrayList));
            xs.Serialize(fs,ps);

        }