C#

<pre> public List<ProductBO> GetAll()
        {
            using (var uow = facade.UnitOfWork)
            {
                return uow.ProductRepository.GetAll().Select(p => Pconv.Convert(p)).ToList();
            }
        }
        public List<ProductBO> FilteretProduct(List<int> ids)
        {
            // Get all the product from the repository
            var AllProducts = GetAll();
            List<ProductBO> FilteredProducts = new List<ProductBO>();
            // Runs through the list of all the products of var AllProducts
            foreach (var prod in AllProducts)
            {
                //Runs through list ids that we get from the controller post request
                foreach (var id in ids)
                {
                    /*If: the IngredientIds(list of ids) of the current
                     * product doesn't contain the current id
                     * Then add that product to the 'FilteredProducts' List*/
                    if (!prod.IngredientIds.Contains(id))
                    {
                        FilteredProducts.Add(prod);
                    }
                }
            }
            //returning the list
            return FilteredProducts;
        }


<pre>
        // This post request, gets the ids, which are used in the FilteretProduct method.
        [HttpPost]
        [Route("FilteredProducts")]
        public List<ProductBO> FilteredList(List<int> ids)
        {
            List<ProductBO>filterProduct;
            return filterProduct = facade.ProductService.FilteretProduct(ids);


        }
        [HttpGet]
        [Route("GetFilteredProducts")]
        public List<ProductBO> GetFilteredList()
        {
            //The list from  above
            return filterProduct;


        }