抽象工厂模式 c#

namespace ConsoleApplication1
{
    class Program
    {
        /// <summary>
        /// 汽车轮子
        /// </summary>
        public abstract class Wheel
        {
            public abstract void Print();
        }

        /// <summary>
        /// 汽车发动机
        /// </summary>
        public abstract class Engine
        {
            public abstract void Print();
        }

        /// <summary>
        /// 抽象工厂类，提供不止一个接口,比如造汽车，可以提供造车轮、引擎等方法
        /// </summary>
        public abstract class AbstractFactory
        {
            public abstract Wheel CreateWheel();
            public abstract Engine CreateEngine();
        }

        public class AudiWheel : Wheel
        {
            public override void Print()
            {
                Console.WriteLine("Create AudiWheel");
            }
        }

        public class FordEngine : Engine
        {
            public override void Print()
            {
                Console.WriteLine("Create FordEngine");
            }
        }

        public class FordWheel : Wheel
        {
            public override void Print()
            {
                Console.WriteLine("Create FordWheel");
            }
        }

        public class AudiEngine : Engine
        {
            public override void Print()
            {
                Console.WriteLine("Create AudiEngine");
            }
        }
        

        /// <summary>
        /// 生产奥迪的工厂
        /// </summary>
        public class AudiFactory : AbstractFactory
        {
            public override Wheel CreateWheel()
            {
                return new AudiWheel();
            }

            public override Engine CreateEngine()
            {
                return new AudiEngine();
            }
        }

        /// <summary>
        /// 生产福特的工厂
        /// </summary>
        public class FordFactory: AbstractFactory
        {
            public override Wheel CreateWheel()
            {
                return new FordWheel();
            }

            public override Engine CreateEngine()
            {
                return new FordEngine();
            }
        }


        static void Main(string[] args)
        {
            //制作奥迪汽车
            AbstractFactory audiFactory = new AudiFactory();
            Wheel audiWheel = audiFactory.CreateWheel();
            audiWheel.Print();
            Engine audiEngine = audiFactory.CreateEngine();
            audiEngine.Print();


            //制作福特车
            AbstractFactory fordFactory = new FordFactory();
            Wheel fordWheel = fordFactory.CreateWheel();
            fordWheel.Print();
            Engine fordEngine = fordFactory.CreateEngine();
            fordEngine.Print();

        }
    }
}