inventory.cs

ASP.net网站开发四“酷”全书：新闻、论坛、电子商城、博客_源码

using System;
using System.Reflection;
using System.Configuration;

namespace BookShop.DALFactory {

	/// <summary>
	/// Factory implementaion for the Inventory DAL object
	/// </summary>
	public class Inventory {

		public static BookShop.IDAL.IInventory Create() {

			/// Look up the DAL implementation we should be using
			string path = System.Configuration.ConfigurationSettings.AppSettings["WebDAL"];
			string className = path + ".Inventory";

			// Using the evidence given in the config file load the appropriate assembly and class
			return (BookShop.IDAL.IInventory)Assembly.Load(path).CreateInstance(className);
		}
	}
}