private void ConfirmNewActivity()
        {
            var newActivity = new Activity {
                Name = NewActivityName, ActivityName = NewActivityType.Name
            };

            Activities.Add(new ActivityViewModel(newActivity));

            savedActivities.SaveAll(GetActivitiesRaw());

            NewActivityType  = ActivityTypes.FirstOrDefault();
            NewActivityName  = String.Empty;
            IsAddingActivity = false;
        }