面向对象的类建模C#

Question

我有两个不同的类,即汽车和广播.我怎样才能确保班级电台只能用于班级汽车？或者这里是否有更好的实施？

我在c#中编码.

class Car
{
    // car has a radio
}  


class Radio
{
    // some properties

        // some methods
        void TurnOn(bool onOff) { }        
}

提前致谢.

Answer 1

class Car {

  public Car() {
    myRadio = new Radio();
  }

  private class Radio {
    void TurnOn(bool onOff) {}
  }
}