Question

Please see code below. The destructors are never called. Anyone know why and how this can be rectified?

public partial class Form1 : Form
{
    private Goo goo;

    public Form1()
    {
        InitializeComponent();

        goo = Goo.GetInstance();         
    }
}

public class Goo
{
    private foo f = new foo();
    private static Goo goo;
    private Goo()
    {}

    public static Goo GetInstance()
    {
        if(goo!=null)
        {
            goo = new Goo();
        }
        return goo;
    }

    ~Goo()
    {

    }
}

class foo
{
    ~foo()
    {

    }
}

Answer 1

Objects referenced by static fields are not simply finalized unless you clear (set to null) the field – and even then it is non-deterministic and not guaranteed. Static fields count as root objects.

When (and why) would you expect this to be collected/finalized? It is still accessible…