using System; using System.ComponentModel; using System.Diagnostics; using System.Runtime.CompilerServices; namespace GuiWPF { public class NotificationObject : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; protected virtual void OnPropertyChanged([CallerMemberName]string propertyName="") { if(PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); Trace.WriteLine(string.Format("OnPropertyChanged {0}",propertyName)); } } } }