public async void LoadProducts()
        {
            IsBusy = true;
            ObservableCollection <Product> product = new ObservableCollection <Product>();
            ProductPair productPair;

            Products.Clear();
            IEnumerable <Product> getProduct = await _pharmacyService.GetProduct();

            foreach (Product p in getProduct)
            {
                Models.Image img = await _pharmacyService.GetImage(p.ID);

                p.ImagePath = img.ImageURL;
                product.Add(p);
            }

            for (int j = 0; j < getProduct.Count(); j += 2)
            {
                if (j + 1 <= product.Count)
                {
                    productPair = new ProductPair(product[j], product[j + 1]);
                    Products.Add(productPair);
                }
            }
            IsBusy  = false;
            product = null;
        }