protected override void OnShow()
{
base.OnShow();
// Update categories.
categoriesDataView.AddRange(inventory.GetCategories());
// Focus on Categories by default and show items from the first category.
navigation.Focus(categoriesDataView);
categoriesDataView.Select();
categoriesDataView.Highlight();
}
private void CategoriesDataView_Highlighted(CategoryData category)
{
// Clear all items once a category is selected before repopulating it with the new items.
itemsDataView.Clear();
itemsDataView.AddRange(inventory.GetItemsFromCategory(category.CategoryType));
// Move to beginning of list if a different category from the previously selected.
if (category.CategoryType != selectedCategory)
{
itemsDataView.MoveToStart();
}
// Highlight first item.
itemsDataView.Highlight();
}