private void StoreFoodIngredientsWithoutAllergens(List <Food> food)
{
var ingredientsThatDontContainGivenAllergen = food
.SelectMany(p => p.Ingredients)
.GroupBy(p => p)
.Select(p => p.Key)
.Where(p => !IngredientsWithAllergens.Contains(p))
.ToList();
IngredientsWithoutAllergens.AddRange(ingredientsThatDontContainGivenAllergen);
}
private void RefreshIngredientsWithoutAllergens()
{
IngredientsWithoutAllergens = IngredientsWithoutAllergens.Distinct().ToList();
IngredientsWithoutAllergens.RemoveAll(i => IngredientsWithAllergens.Contains(i));
}