[Solved] how to make an instance of a subclass of type base class C#

by


When an instance of Motorcycle is seen as as Vehicle, then it, quite naturally, cannot give you access to Motorcycle‘s unique properties. That’s the point of inheritance.

To access them, you have to type-cast the instance:

Vehicle v = new Motorcycle();
((Motorcycle)v).MotorbikeEngineVolume = 250;

When you cannot be sure the instance truly is a Motorcycle, use the is operator:

Vehile v = …
…
if (v is Motorcycle) 
{
    ((Motorcycle)v).MotorbikeEngineVolume = 250;
}

solved how to make an instance of a subclass of type base class C#