AI_Project_3.MainPage.RemoveFromSchedule_Click C# (CSharp) Method

        private void RemoveFromSchedule_Click(object sender, RoutedEventArgs e)
        {
            int selectedItem = _SelectedQuarter.SelectedIndex;

            if (selectedItem >= 0)
            {
                _CollectionOfClassesForSelectedQuarter.RemoveAt(selectedItem);
                _SelectedQuarter.ItemsSource = _CollectionOfClassesForSelectedQuarter;
            }
        }