//Creating a Product constructor
 public ProductCatalog() {
     Products = new Dictionary<string, Product>();
     Products["UY1122NB"] = new Product() {
         Id = "UY1122NB",
         Name = "Coloring Book",
         Price = 10.99m
     };
     Products["UY1135NB"] = new Product() {
         Id = "UY1135NB",
         Name = "String Cheese",
         Price = 3.05m
     };
     Products["UY2345NB"] = new Product() {
         Id = "UY2345NB",
         Name = "Dark Chocolate Cookies",
         Price = 4.99m
     };
     
 }
        public ProductCatalog()
        {

            Products = new Dictionary<string, Product>();
            Products["UY8890NB"] = new Product()
            {
                Id = "UY8890NB",
                Name = "FirstProduct",
                Price = 1.5m
            };
            Products["AB8890NA"] = new Product()
            {
                Id = "AB8890NA",
                Name = "SecondProduct",
                Price = 1.2m
            };

            Products["CC8890CC"] = new Product()
            {
                Id = "CC8890CC",
                Name = "ThirdProduct",
                Price = 2.0m
            };
        }