Get Product pages count

[CjlaBuk]

What is the fastest way to get total pages count or total product count? Only the number not the products themselves.
I'm trying to optimize this piece of code to make it somehow concurrent with multiple tasks retrieving products at the same time:

        private async Task<List<Product>> ListProducts()
        {
            Console.WriteLine("Leyendo PRODUCTOS desde la pagina.");
            List<Product> ProductsPage = new List<Product>();
            Dictionary<string, string> dic1 = new Dictionary<string, string>
            {
                { "per_page", "100" }
            };
            int pageNumber1 = 1;
            dic1.Add("page", pageNumber1.ToString());
            var ProductsPageTemp = await wc.Product.GetAll(dic1);
            while (ProductsPageTemp.Count > 0)
            {
                ProductsPage.AddRange(ProductsPageTemp);
                pageNumber1++;
                dic1["page"] = pageNumber1.ToString();
                ProductsPageTemp = await wc.Product.GetAll(dic1);
            }
            Console.WriteLine("     ¡Exito Leyendo PRODUCTOS desde la pagina!");
            return ProductsPage;
        }

[XiaoFaye]

Try this: