c# - How to call a second-level base class method like base.base.GetHashCode()

Question

class A
{
    public override int GetHashCode()
    {
        return 1;
    }
}
class B : A
{
    public override int GetHashCode()
    {
        return ((object)this).GetHashCode();
    }
}

new B().GetHashCode()

this overflows the stack. How can I call Object.GetHashCode() from B.GetHashCode()?

edit: B now inherits from A.

Answer 1

(edit - misread question)

If you want to get the original object.GetHashCode() version; you can't - at least, not unless A makes it available via something like:

protected int GetBaseHashCode() { return base.GetHashCode();}

(and have B call GetBaseHashCode()).

The reason it overflows is that GetHashCode is (obviously) virtual - it doesn't matter if you cast it to object; it still starts at the most-derived implementation in the actual object, i.e. B.GetHashCode() (hence the explosion).