MvcBookStore/Controllers/CheckOutController.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace MvcBookStore.Controllers
{
    [Authorize]
    public class CheckOutController : Controller
    {
        Models.IShoppingCart _shoppingCart;
        Models.IorderRepository _orderRepository;
        const string PromoCode = "FREE";
        public CheckOutController()
        {
            _shoppingCart = new Models.ShoppingCart();
            _orderRepository = new Models.OrderRepository();
        }
        //
        // GET: /CheckOut/

        public ActionResult AddressAndPayment()
        {
            return View();
        }
        [HttpPost]
        public ActionResult AddressAndPayment(FormCollection values)
        {
            var order = new Models.Orders();
            TryUpdateModel(order);
            try
            {
                //如果结账出现错误
                if (string.Equals(values["PromoCode"], PromoCode, StringComparison.OrdinalIgnoreCase) == false)
                {
                    //继续输入付款码
                    return View(order);
                }
                //否则正常结账
                else
                {
                    order.UserName = User.Identity.Name;
                    order.OrderDate = DateTime.Now;
                    _orderRepository.CreateOrder(order);

                    _shoppingCart.GetCartId(this.HttpContext);
                    _shoppingCart.CreateOrder(order);

                    return RedirectToAction("Complete", new { id = order.OrderId });
                }
            }
            catch
            {
                //提交错误，显示错误信息
                return View("Error");

            }
        }
        public ActionResult Complete(int id)