private void MealAdded(object sender, MealAddedEventArgs e)
{
var meal = sender as Meal;
if (meal == null)
{
return;
}
var id = OrderItems.Count == 0 ? 1 : OrderItems.Max(order => order.Id) + 1;
var item = new OrderItem();
item.AddMeal(id, meal, e.MealType);
item.OrderDeleted += DeleteOrderItem;
OrderItems.Add(item);
OnOrderItemAdded(new OrderItemAddedEventArgs {
OrderItemAdded = item
});
}