Calling child class method from parent

Question

Is it possible for the a.doStuff() method to print \"B did stuff\" without editing the A class? If so, how would I do that?

class Program
{
    static void Main         


        

Answer 1

Yes, if you declare doStuff as virtual in A and then override in B.

class A
{
    public virtual void doStuff()
    {
        Console.WriteLine("A did stuff");
    }
}

class B : A
{
    public override void doStuff()
    {
        Console.WriteLine("B did stuff");
    }
}