public SoundsViewModel(IMessanger commonMessanger) { messanger = commonMessanger; soundPreferences = messanger.GetSoundPreferences(); EnableSounds = soundPreferences.Enable; PlaySoundCommand = new RelayCommand(PlaySound); SetSoundCommand = new RelayCommand(SetSound); DeleteSoundCommand = new RelayCommand(DeleteSound); AddNewSoundCommand = new RelayCommand(AddSound); LoadData(); }