public async Task <ActionResult> DisplayProducts()
        {
            List <Product>    lstProducts    = null;
            ProductOrder      productOrder   = new ProductOrder();
            List <AddProduct> lstAddProducts = new List <AddProduct>();

            lstProducts = await restHelper.GetAllProducts();

            foreach (Product pd in lstProducts)
            {
                AddProduct addPd = new AddProduct();
                addPd.ProductId   = pd.ProductId;
                addPd.ProductName = pd.ProductName;
                addPd.UnitPrice   = pd.UnitPrice;
                lstAddProducts.Add(addPd);
            }
            productOrder.lstProducts = lstAddProducts;
            return(View(productOrder));
        }