/// <summary>
        /// Создание нового Event
        /// </summary>
        private void CreateEventMenuItem_OnClick(object sender, RoutedEventArgs e)
        {
            var newEvent = new NewEvent(_timetable);

            if (newEvent.ShowDialog() == true)
            {
                _timetable.AddEvent(newEvent.Event);
                _timetable.Sort();
                MessageBox.Show("Событие создано!");
                PrintCard(newEvent.Event, Brushes.CadetBlue);
            }
        }