private void AddShopBtn_Click(object sender, RoutedEventArgs e)
        {
            AddAttractionForm addProductForm = new AddAttractionForm();

            addProductForm.ShowDialog();
            AttractionListBox.ItemsSource = null;
            AttractionListBox.ItemsSource = DBHelper.GetContext().Attraction.ToList();
        }
        private void NewAttractionBtn_Click(object sender, RoutedEventArgs e)
        {
            AddAttractionForm addAttractionForm = new AddAttractionForm();

            addAttractionForm.ShowDialog();
            var selected = (Place)EndPlace.SelectedItem;

            if (EndPlace.SelectedItem == null)
            {
                AttractionCombo.ItemsSource = null;
                AttractionCombo.ItemsSource = selected.Attraction.ToList();
                return;
            }
            AttractionCombo.SelectedItem = null;
            AttractionCombo.ItemsSource  = null;
            AttractionCombo.ItemsSource  = selected.Attraction.ToList();
        }