namespace WindowsFormsApplication7
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public class Profile
        {
            public Item[] ItemStack = new Item[5];
        }

        public class Item
            {
            public string Name { get; set; }
            public string Directory { get; set; }
            public string Norm_prefix { get; set; }
            public string Spec_prefix { get; set; }
            }

        private void Form1_Load(object sender, EventArgs e)
        {
            Profile myObject = new Profile();
            XmlSerializer mySerializer = new
            XmlSerializer(typeof(Profile));

            myObject.Itemstack.Name = "canvas"; // How do i put things into the class Profile ?

            StreamWriter myWriter = new StreamWriter("c:/myFileName.xml");
            mySerializer.Serialize(myWriter, myObject);
            myWriter.Close();
        }
    }
}