学习设计模式（创建者模式）-优快云博客

本文通过快餐店套餐的例子，介绍了建造者模式的具体实现方式。包括普通套餐和VIP套餐的构造过程，展示了如何通过抽象基类定义操作接口，并由具体子类实现业务逻辑。

原文地址：http://terrylee.cnblogs.com/archive/2005/12/19/299878.html

自己写了下：

    /// <summary>
    /// 指导者（收银员）
    /// </summary>
    public class Manager
    {
        public void Construct(Builder builder)
        {
            builder.AddMeat();
            builder.BuildCoke();
            builder.Money();
        }

/// <summary>
    /// 构造者
    /// </summary>
    public abstract class Builder
    {
        /// <summary>
        /// 添加肉类
        /// </summary>
        public abstract void AddMeat();

        /// <summary>
        /// 添加可乐
        /// </summary>
        public abstract void BuildCoke();

        /// <summary>
        /// 返回金钱
        /// </summary>
        /// <returns></returns>
        public abstract int Money();

}

/// <summary>
    /// 实例创建者(普通套餐)
    /// </summary>
    public class CommonBuilder:Builder
    {
        public override void AddMeat()
        {
            Console.WriteLine("添加一块肉");
        }

        public override void BuildCoke()
        {
            Console.WriteLine("添加一杯可乐");
        }

        public override int Money()
        {
            return 10;
        }
    }

    /// <summary>
    /// VIP套餐
    /// </summary>
    public class VIPBuilder:Builder
    {
        public override void AddMeat()
        {
            Console.WriteLine("添加2快肉");
        }

        public override void BuildCoke()
        {
            Console.WriteLine("添加2杯可乐");
        }

        public override int Money()
        {
            return 15;
        }
    }

/// <summary>
    /// 创建者模式
    /// </summary>
    class Program
    {
        static void Main(string[] args)
        {
            //普通的套餐
            Manager foodManager = new Manager();
            Builder builder = new CommonBuilder();
            foodManager.Construct(builder);

            //vip套餐
            Builder builder2 = new VIPBuilder();
            foodManager.Construct(builder2);
        }
    }

转载于:https://www.cnblogs.com/xxtkong/articles/1979502.html