How to capture old value and new value in INotifyPropertyChanged implementation of PropertyChanged event in C#

Question

I need to capture old value, new value and property name in PropertyChanged event handler. The default implementation of INotifyPropertyChanged provides only name of the pro

Answer 1

You can't. Implement INotifyPropetyChanging as well. That will provide access to the old value. You can find example implementations for both interfaces in the documentation.