public async Task <IActionResult> Checkout() { //SandboxEnvironment(clientId, clientSerect) var environment = new SandboxEnvironment("AQpgvR2MiWimK_hj88CQvkSyNg5xE_097z5rawOtDRvidGAGGxrdJdgKhb34l7sQfKTPeA1Z7O-f1Lkl", "ENitUdOKY6bjZ9w3tnqaETbcJeqYLrFot0lBhUgZlccaAEdkr1gFeTWGzh0zG_npFJ1MUGZbTzZLvJWe"); var client = new PayPalHttpClient(environment); //Đọc thông tin đơn hàng từ Session var itemList = new ItemList() { Items = new List <Item>() }; var tongTien = Cart.Sum(p => p.ThanhTien); foreach (var item in Cart) { itemList.Items.Add(new Item() { Name = item.HangHoa.TenHh, Currency = "USD", Price = item.HangHoa.GiaBan.ToString(), Quantity = item.SoLuong.ToString(), Sku = "sku", Tax = "0" }); } //itemList.Items.Add(new Item() //{ // Name = "Coca", // Currency = "USD", // Price = "5", // Quantity = "1", // Sku = "sku", // Tax = "0" //}); //itemList.Items.Add(new Item() //{ // Name = "Pepsi", // Currency = "USD", // Price = "2", // Quantity = "3", // Sku = "sku", // Tax = "0" //}); var payment = new Payment() { Intent = "sale", Transactions = new List <Transaction>() { new Transaction() { Amount = new Amount() { Total = tongTien.ToString(), Currency = "USD", Details = new AmountDetails { Tax = "0", Shipping = "0", Subtotal = tongTien.ToString() } }, ItemList = itemList, Description = "Don hang 001", InvoiceNumber = DateTime.Now.Ticks.ToString() } }, RedirectUrls = new RedirectUrls() { CancelUrl = "http://localhost:50289/Paypal/Fail", ReturnUrl = "http://localhost:50289/Paypal/Success" }, Payer = new Payer() { PaymentMethod = "paypal" } }; PaymentCreateRequest request = new PaymentCreateRequest(); request.RequestBody(payment); try { HttpResponse response = await client.Execute(request); var statusCode = response.StatusCode; Payment result = response.Result <Payment>(); var links = result.Links.GetEnumerator(); string paypalRedirectUrl = null; while (links.MoveNext()) { LinkDescriptionObject lnk = links.Current; if (lnk.Rel.ToLower().Trim().Equals("approval_url")) { //saving the payapalredirect URL to which user will be redirected for payment paypalRedirectUrl = lnk.Href; } } return(Redirect(paypalRedirectUrl)); } catch (HttpException httpException) { var statusCode = httpException.StatusCode; var debugId = httpException.Headers.GetValues("PayPal-Debug-Id").FirstOrDefault(); return(RedirectToAction("Fail")); } }