Question

How can I access the children from a base class?

My classes are setup like this:

abstract class Bank
{
    public Bank(int One, int Two)
    {
    }
}

public class Checking : Bank
{
    public Checking(int One, int Two) : base(One, Two)
    {
    }
}

public class Savings : Parent
{
    public Savings(int One, int Two) : base(One, Two)
    {
    }
}

How can I have the Bank class instantiate both a checking and savings when needed?

I want to do something like:

Bank B = new Savings(....);
B = new Checkings(....);

B.Savings.Foo(......);
B.Checkings.Foo(.....);

Answer 1

Create class which will hold both instances Checkings and Savings.

public class BankTuple
{
    public BankTuple(int one, int two)
    {
        Checkings = new Checkings(one, two);
        Savings = new Savings(one, two);
    }

    public Checkings Checkings { get; private set; }

    public Savings Savings { get; private set; }
}

Then use it:

var tuple = new BankTuple(1, 2);
// tuple.Checkings
// tuple.Savings