shoppingcart.cs

客户关系管理系统

using System;
using System.Collections;

namespace HKeBookshop
{
	/// <summary>
	/// ShoppingCart 的摘要说明。
	/// </summary>
	public class ShoppingCart
	{
		public ShoppingCart()
		{
			//
			// TODO: 在此处添加构造函数逻辑
			//
		}
		Hashtable bookOrders=new Hashtable();

		public ICollection BookOrders
		{
			get
			{
				return bookOrders.Values;
			}
		}

		public void AddOrder(BookOrder Order)
		{
			BookOrder bookOrder=(BookOrder)bookOrders[Order.BookId];
			if (bookOrder!=null)
			{
				bookOrder.Quantity=bookOrder.Quantity+1;
			}
			else
			{
				bookOrders.Add(Order.BookId,Order);
			}
		}

		public void RemoveOrder(string BookId)
		{
			if (bookOrders[BookId]!=null)
			{
				bookOrders.Remove(BookId);
			}
		}

		public decimal TotalPrice
		{
			get
			{
				decimal totalPrice=0;
				foreach (DictionaryEntry entry in bookOrders)
				{
					BookOrder bookOrder = (BookOrder)entry.Value;
					totalPrice+=bookOrder.Price*bookOrder.Quantity;
				}
				return totalPrice;
			}
			
		}
	}
}