心得:優(yōu)點(diǎn)是只要實(shí)現(xiàn)共有的接口就可以實(shí)現(xiàn)不同車跑的方式.但缺點(diǎn)就是要判斷哪一種車,造成要修改Driver 類
2.工廠方法:
using System;
public interface ICar
{
    void run();
}

public class BMWCar : ICar
{
    public void run()
    {
        Console.WriteLine("BMWCar run");
    }
}

public class BenzCar : ICar
{
    public void run()
    {
        Console.WriteLine("BenzCar run");
    }
}
public abstract class Driver
{
    public abstract ICar DriverCar();
}

public class BMWDriver : Driver
{
    public override ICar  DriverCar()
    {
        return new BMWCar();
    }

}
public class BenzDriver : Driver
{
    public  override ICar DriverCar()
    {
        return new BenzCar();
    }
}

class Client
{
    public static void Main()
    {
        Driver myDriver = new BenzDriver();
        ICar myCar = myDriver.DriverCar();
        myCar.run();
        Console.Read();
    }
}

心得:優(yōu)點(diǎn)是符合了開(kāi)放-封閉原則(OCP),從整體上還看不出什么缺點(diǎn).

3.抽象工廠:

using System;

public interface IBusinessCar
{
    void run();
}

public interface ISportCar
{
void run();
}

public class BMWBusinessCar : IBusinessCar
{
    public void run()
    {
        Console.WriteLine("BMWCar run");
    }

}

public class BenzBusinessCar : IBusinessCar
{
    public void run()
    {
        Console.WriteLine("BenzBusinessCar run");
    }
}

public class BMWSportCar:ISportCar
{
public void run()
{
Console.WriteLine("BMWSportCar run");
}
}

public class BenzSportCar:ISportCar
{
public void run()
{

Console.WriteLine("BenzSportCar run");
}
}

public interface IDriver
{
IBusinessCar BusinessCarDriver();
ISportCar SportCarDriver();
}

public class BMWDriver:IDriver
{
public IBusinessCar BusinessCarDriver()
{
return new BMWBusinessCar();
}
public ISportCar SportCarDriver()
{
return new BMWSportCar();
}
}

public class BenzDriver:IDriver
{
public IBusinessCar BusinessCarDriver()
{
return new BenzBusinessCar();
}

public ISportCar SportCarDriver()
{
return new BenzSportCar();
}
}

class Client
{
    public static void Main()
    {
        IDriver myDriver =new BenzDriver();
        ISportCar myCar = myDriver.SportCarDriver();
        myCar.run();
        Console.Read();
    }

}

心得:抽象方法似乎達(dá)到了完美境界.把開(kāi)奔馳的司機(jī)和開(kāi)寶馬的司機(jī)的公共方法抽象出來(lái),并對(duì)不同的司機(jī)創(chuàng)建不同的類,到時(shí)候不管是開(kāi)什么車的司機(jī)隨你添加.它們唯一的共同點(diǎn)都是開(kāi)車.