public virtual ActionResult PurgeCache()
        {
            try
            {
                MethodCache.ExpireAll();
                QueryCacheManager.ExpireAll();
                SuccessNotification(_localizationService.GetResource("OperationCompletedSuccessfully"));
            }
            catch (Exception e)
            {
                ErrorNotification(e);
            }

            return(RedirectToAction("Index", "Administration"));
        }