.NET: Is there a built in version of PropertyChangedEventArgs that includes the old/new value?

Question

Is there a built in version of PropertyChangedEventArgs that includes the old/new value?

Answer 1

No. There is no new/old value tracking within the framework's PropertyChangedEventArgs. You could of course sub-class it.

As an exercise though, you might like to implement an adapter that works with INotifyPropertyChanged in conjunction with INotifyPropertyChanging to capture the before/after values and send them on that way.

In WPF, the norm is for dependency properties to raise their change notifications with new/old values though.