Trying to understand INotifyPropertyChanged

Question

Several (newbie) questions:

1) I see a lot of

public Person SelectedPerson { get; set; } 

I am assuming this does NOT fire a property

Answer 1

Yes, Auto Properties do not fire the PropertyChanged event.

You can get the CanDeletePerson to re-evaluate by adding OnPropertyChanged("CanDeletePerson") to the SelectedPerson setter.

I'm not sure if your last bit is a question, but you can subscribe to the PropertyChanged event like any other event. MyClass.PropertyChanged += MyClassPropertyChanged

Where MyClassPropertyChanged is

private void MyClassPropertyChanged(object sender, PropertyChangedEventArgs args)
{
    args.PropertyName .... //<-- Name of property changed.
}

But you shouldn't need to. WPF does the subscribing to the event that it needs to.