How to force overriding a method in a descendant, without having an abstract base class?

Question

Question Heading seems to be little confusing, But I will Try to clear my question here.

using System;
using System.Collections.Generic;
usi         


        

Answer 1

You can't using the setup you described. PTSalesPerson will already have an implementation of GiveBonus because it inherits from SalesPerson.