private async void GetMoreInfo(object sender, EventArgs e)
        {
            Button              button            = (Button)sender;
            string              product_to_search = (string)button.CommandParameter;
            Product             button_product    = Products.Find(Products => Products.Item_id == product_to_search);
            HttpResponseMessage response          = await GetProduct.GetProductPriceHistory(button_product.Item_id);

            if (response.IsSuccessStatusCode)
            {
                string response_content = await response.Content.ReadAsStringAsync();

                List <Price> prices = JsonConvert.DeserializeObject <List <Price> >(response_content);
                await Navigation.PushAsync(new ProductInfoPage(button_product, prices));
            }
            else
            {
                if (response.StatusCode == System.Net.HttpStatusCode.BadGateway)
                {
                    await DisplayAlert("Try Again!", "No connection with the server", "OK");
                }
                if (response.StatusCode == System.Net.HttpStatusCode.BadRequest)
                {
                    List <Price> prices = new List <Price>();
                    await Navigation.PushAsync(new ProductInfoPage(button_product, prices));
                }
            }
        }