<p>Please mark the Dispose(bool disposing) method in ContainerControlledLifetimeManager as virtual.</p> <p>Also the &#39;value&#39; object should be &#39;protected&#39; not &#39;private&#39;.</p> <p>&nbsp;</p> <p>Currently derived classes can&#39;t override this method.</p> <p>&nbsp;</p> <p>Attached is the updated code.</p>