Maintaining a two way relationship between classes

Question

It is pretty common, especially in applications with an ORM, to have a two way mapping between classes. Like this:

public class Product
{
    private List

        

Answer 1

My first thought is, in your function/property used to add prices, add a line of code like so:

public void addPrice(Price p) {
     //code to add price goes here
     p.Product = this;
}