Is it possible to create a truely weak-keyed dictionary in C#?

Question

I\'m trying to nut out the details for a true WeakKeyedDictionary<,> for C#... but I\'m running into difficulties.

I realise this is a non-trivial

Answer 1

Have a look at the ConditionalWeakTable<TKey, TValue> Class.

Enables compilers to dynamically attach object fields to managed objects.

It's essentially a dictionary where both the key and the value are a WeakReference, and the value is kept alive as long as the key is alive.

Note! This class does not use GetHashCode and Equals to do equality comparisons, it uses ReferenceEquals.