Infragistics UltraGrid with hierarchical data

using System;
using System.Collections.Generic;
using System.Windows.Forms;

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

        private void button1_Click(object sender, EventArgs e)
        {
            List<MyChild> stankosKids = new List<MyChild>();
            stankosKids.Add(new MyChild {Name = "Velimir", Gender = "Male"});
            stankosKids.Add(new MyChild {Name = "Hilda", Gender = "Female"});

            List<MyChild> arnoldsKids = new List<MyChild>();
            arnoldsKids.Add(new MyChild {Name = "Thomas", Gender = "Male"});
            arnoldsKids.Add(new MyChild {Name = "Sabrina", Gender = "Female"});

            List<MyChild> chucksKids = new List<MyChild>();
            chucksKids.Add(new MyChild {Name = "Bruce", Gender = "Male"});
            chucksKids.Add(new MyChild {Name = "Lee", Gender = "Female"});

            List<MyParent> list = new List<MyParent>();
            list.Add(new MyParent {ID = 1, FirstName = "Stanko", LastName = "Milosev", Address = "Herseler strasse 8", MyKids = stankosKids});
            list.Add(new MyParent {ID = 2, FirstName = "Arnold", LastName = "Schwarzeneger", Address = "Whitehouse 1", MyKids = arnoldsKids});
            list.Add(new MyParent {ID = 3, FirstName = "Chuck", LastName = "Norris", Address = "Las Vegas", MyKids = chucksKids});

            ultraGrid1.SetDataBinding(list, null);
        }

        public class MyParent
        {
            public int ID { get; set; }
            public string FirstName { get; set; }
            public string LastName { get; set; }
            public string Address { get; set; }

            public List<MyChild> MyKids { get; set; }
        }

        public class MyChild
        {
            public string Name { get; set; }
            public string Gender { get; set; }
        }
    }
}