private void DisconnectFromManager()
 {
     if (m_hostManager != null)
     {
         m_hostManager.HwndHostGroup.RemoveHost(AssociatedObject);
         m_hostManager = null;
     }
 }
        private void ConnectToManager(IHwndHostManager manager)
        {
            if (manager != null)
            {
                m_hostManager = manager;
                m_hostManager.HwndHostGroup.AddHost(AssociatedObject);
            }

            else
            {
                m_hostManager = null;
            }
        }