public override Delegate RemoveHandler(object callableObject, IEqualityComparer <object> comparer)
{
List <KeyValuePair <WeakReference, WeakReference> > copyOfHandlers = _handlers.GetCopyForRead();
for (int i = copyOfHandlers.Count - 1; i >= 0; i--)
{
object key = copyOfHandlers[i].Key.Target;
object value = copyOfHandlers[i].Value.Target;
if (key != null && value != null && comparer.Equals(key, callableObject))
{
Delegate handler = (Delegate)value;
_handlers.RemoveAt(i);
return(handler);
}
}
return(null);
}