// Constructor Based injection

public class Car

{

  private readonly IWheel _wheel;

  private readonly IBattery _battery;

  public Car(IWheel wh, IBattery bt) 

  {

    _wheel = wh;

    _battery = bt;

  }

}

#region Interfaces

public interface IWheel

{

    void Foo();

}

​

public interface IBattery

{

    void Bar();

}

#endregion

public class Program

{

    public static void Main()

    {

    }

}