ObservableCollection PropertyChanged event

Question

OK so I want to subclass ObservableCollection to add a property to it. Unfortunately the PropertyChanged event is protected. Basically I want to subcla

Answer 1

I tried to add a new property in

public class ResultCollection : ObservableCollection
{

        Boolean _val;
        public Boolean Val
        {   
            get
            {   
                return _val;
            }
            set
            {   
                _val= value;
                OnPropertyChanged(new PropertyChangedEventArgs("Val"));
            }
        }
}

I really didn't notice that PropertyChanged is defined as protected. Finally moved Val property to ViewModel.