C# + COM Interop, deterministic release

Question

COM objects usually have deterministic destruction: they are freed when the last reference is released.

How is this handled in C# - COM Interop? The classes don\'t

Answer 1

This is from a related (but subtly different) question, but I think the answer is pretty tidy - so I thought it warranted adding here too.

Here's an option that uses Expression trees to discuss our intent, capturing the value at each node - allowing a single release:

static class ComExample {
    static void Main()
    {
        using (var wrapper = new ReleaseWrapper())
        {
            var baz = wrapper.Add( () => new Foo().Bar.Baz );
            Console.WriteLine(baz.Name);
        }
    }
}
class ReleaseWrapper : IDisposable
{
    List