public void Casting() // rzutowanie
{
Car sportCar = new SportCar();
Car truck = new Truck();
//sportCar.DisplayInfo(); // can't use metod DisplayInfo in this way, becaouse sportCar is a object from class Car, not SportCar. Solution of this problem is casting look down:
//down casting - rzutowaniu w dół
SportCar realSportCar = (SportCar)sportCar;
realSportCar.DisplayInfo();
//up casting - rzutowanie w górę
Car realCar = (Car)realSportCar; // now metod DisplayInfo is not available
//more secure approach:
bool isSportcar = sportCar is SportCar; //I check if I can cast a sportCar for the type SportCar
if (isSportcar)
{
((SportCar)sportCar).DisplayInfo();
}
SportCar castedSportCar = sportCar as SportCar;
if (castedSportCar != null)
{
castedSportCar.DisplayInfo();
}
}
public void Begin()
{
SportCar sportCar = new SportCar();
Truck truck = new Truck();
List <Car> cars = new List <Car>()
{
sportCar, truck
};
foreach (Car car in cars)
{
car.Start();
car.Accelerate();
car.Boost();
}
Console.ReadLine();
}
