简单工厂模式

public interface ICar
{
    public void Drive();
}

public class XiaoMiCar : ICar
{
    public void Drive()
    {
        Console.WriteLine("正在驾驶小米汽车");
    }
}

public class TeslaCar : ICar
{
    public void Drive()
    {
        Console.WriteLine("正在驾驶特斯拉");
    }
}
public static class CarFacotry
{
    public static ICar CreateCar(string cartype)
    { 
        switch (cartype)
        {
            case "xiaomi":return new XiaoMiCar();
            case "tesla":return new TeslaCar();
            default:return null;
        }
    }
}

   Console.WriteLine("简单工厂模式");
   ICar car = CarFacotry.CreateCar("xiaomi");
   car.Drive();
   ICar car1 = CarFacotry.CreateCar("tesla");
   car1.Drive();