抽象工厂模式是是用一个超级工厂去创建其他工厂，简单点说就是工厂的父类，属于创建型模式。

目标：提供一个创建一组对象的方法，而无需指定它们具体的类（同工厂方法）。
使用场景：系统的产品有多于一个的产品族，而系统只消费其中某一族的产品。
实现：在一个工厂里聚合多个同类产品。

案例

上一个工厂方法模式的案例是 一家生产电子产品的工厂，可以生产各种电子产品，但是这时候集团还拥有一家生产服装的工厂，
怎么能把这两个工厂给管理起来，其实把公产管理起来这样更加有助于去理解业务中的类的组织管理，不至于混乱不清晰。

namespace DesignPatterns.AbstractFactory
{/// <summary>/// 抽象工厂/// </summary>public abstract class AbstractFactory{public virtual ElectronicProduct GetElectronicProduct(string name){throw new NullReferenceException();}public virtual CarProduct GetCarProduct(string name){throw new NullReferenceException();}}/// <summary>/// 抽象工厂生成器，抽象工厂的调用入口/// </summary>public class FactoryProducer{/// <summary>/// 根据名称获取子类工厂的实例/// </summary>/// <param name="name"></param>/// <returns></returns>public static AbstractFactory GetFactory(string name){if (name.ToLower() == "car")return new CarFactory();if (name.ToLower() == "electronic")return new ElectronicFactory();return null;}}#region 子类工厂 实现抽象工厂的方法public class CarFactory : AbstractFactory{public override CarProduct GetCarProduct(string name){if (name.ToLower() == "motorbike")return new Motorbike();if (name.ToLower() == "xpandrally")return new XpandRally();throw new Exception("unknow product name");}}public class ElectronicFactory : AbstractFactory{public override ElectronicProduct GetElectronicProduct(string name){if (name.ToLower() == "tv")return new TV();if (name.ToLower() == "mp4")return new MP4();if (name.ToLower() == "mp3")return new MP3();throw new Exception("unknow product name");}}#endregion#region 子类工厂的产品public abstract class CarProduct{public abstract void Run();}public class Motorbike : CarProduct{public override void Run(){Console.WriteLine("摩托车");}}public class XpandRally : CarProduct{public override void Run(){Console.WriteLine("拉力赛车");}}public abstract class ElectronicProduct{public abstract void Play();}public class TV : ElectronicProduct{public override void Play(){Console.WriteLine("TV play");}}public class MP4 : ElectronicProduct{public override void Play(){Console.WriteLine("MP4 play");}}public class MP3 : ElectronicProduct{public override void Play(){Console.WriteLine("MP3 play");}}#endregionpublic class AbstractFactoryTest{public static void Test(){//实例化造车工厂AbstractFactory carFactory = FactoryProducer.GetFactory("car");//获取摩托车实例var motorbike = carFactory.GetCarProduct("motorbike");//执行实例方法motorbike.Run();//实例化电子厂AbstractFactory electronicFactory = FactoryProducer.GetFactory("electronic");//获取tv实例var tv = electronicFactory.GetElectronicProduct("tv");tv.Play();}}
}