using System; namespace Perspex.Xaml.Base.UnitTest.SampleModel { public class Level1 : PropertyChangeNotifier { private Level2 level2 = new Level2(); private DateTime dateTime; private string text; public Level2 Level2 { get { return level2; } set { level2 = value; OnPropertyChanged(); } } public string Text { get { return text; } set { text = value; OnPropertyChanged(); } } public DateTime DateTime { get { return dateTime; } set { dateTime = value; OnPropertyChanged(); } } } }