Maybe is a silly question but not for me.
We have a class: Person
And several subclasses: Student, Teacher, ServicePerson
Person has its properties and methods that are inherit by subclasses.
For example Person.fullName()
Each subclass has its properties and methods.
We have an array with all Persons and want to know witch students are already registered:
For each p as Person in Persons if p isa Student then dim s as string = p.FullName if p.register then // don't work because p is a Person // How do I convert p to a Student? To access the Student methods? end if end if Next