How Do You Cast A IEnumerable List To A Listbox Object Collection?

It's easy to cast a Listbox.ObjectCollection to a list to perform enumerations on but what about if you want to go the other way? I KNOW YOU CAN USE A FOREACH( Like

 foreach (string d in the_domains)
                {
                    this.dList.Add(d);
                }

Now

 var the_domains = domains.Items.Cast<string>().Where(item => (item.Contains("Is Available")));
                foreach (string d in the_domains)
                {
                    this.lstbx_domains.Items.Add(d);
                }

works find but what if I want to now convert the_domains? I've tried a simple case like

(Listbox.ObjectCollection)the_domains

This works but it gets generates a exception.