cart.cs

如果不使用IIS,请先运行 XSP.exe,待提示已侦听 8080端口后

using System;
using System.Collections.Generic;
using System.Web;


namespace DNNLite.DesktopModules.Shop
{
    /// <summary>
    ///购物车
    /// </summary>
    public class Cart
    {
        //IList<BuyItem> _buyitems = new List<BuyItem>();

        private static IList<BuyItem> items()
        {
            if (HttpContext.Current.Session["dnnlite_cart"] == null)
            { 
                HttpContext.Current.Session["dnnlite_cart"]=
                    new List<BuyItem>();
            }

            return (IList<BuyItem >)
                HttpContext.Current.Session["dnnlite_cart"];

        }

        private static void setno()
        {
            int i = 1;
            foreach (BuyItem item in items())
            {
                item.No = i;
                i++;
            }
        }

        /// <summary>
        /// 加入购物车
        /// </summary>
        /// <param name="itm">物品</param>
        public static void Add(BuyItem itm)
        {
            items().Add(itm);
            setno();
        }
        /// <summary>
        /// 移除物品
        /// </summary>
        /// <param name="no">第几个</param>
        public static void Remove(int no)
        {
            foreach (BuyItem item in items())
            {
                if (item.No == no)
                {
                    items().Remove(item);
                    break;
                }
            }
            setno();

        }
        /// <summary>
        /// 清空
        /// </summary>
        public static void Clear()
        {
            items().Clear();
        }

        /// <summary>
        /// 获得所有物品
        /// </summary>
        /// <returns></returns>
        public static IList<BuyItem> GetItems()
        {
            return items();
        }

        /// <summary>
        /// 实际总金额
        /// </summary>
        public static decimal TrueTotalMoney
        {
            get 
            {
                decimal t=0;
                
                foreach (BuyItem item in items())
                {
                    t += item.TruePrice * item.Amount;
                    
                }
                return t;
            
            }
        
        }





    }
}