Asp.Net工厂模式--工厂类的获取

工厂模式是基本的设计模式之一，我们在开发XueBa UI的过程中，对BLL层进行了工厂化的包装

namespace XueBa.SqlServer

{

    public class Factory

    {

        public DocumentManager DocumentManager { get; private set; }

        public QuestionManager QuestionManager { get; private set; }

        public TagManager TagManager { get; private set; }

        private static Factory instance = null;



        private static object loc = new object();



        private Factory() 

        {

            DocumentManager = new DocumentManager();

            QuestionManager = new QuestionManager();

            TagManager = new TagManager();

        }



        public static Factory getInstance()

        {

            lock (loc)

            {

                if (instance == null)

                {

                    instance = new Factory();

                }

            }

            return instance;

        }

    }

}

那么，该如何使得每个Asp.Net页面都能够获得Factory类呢？我采用了重载System.Web.UIControls.Page基类的方法

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using XueBa.SqlServer;



/// <summary>

/// 所有asp.net页面的基类

/// </summary>

public class BasePage : System.Web.UI.Page

{



    public Factory Factory

    {

        get

        {

            return Factory.getInstance();

        }

    }

}

这样，让每个页面继承BasePage类，就可以实现对工厂类的访问了