public async Task <ActionResult> OnGetAsync(long id)
        {
            /*
             *   2 - Namespace in Datastore. It is used as TenantID in multi-tenant system here
             *   PROD - Environment. Can be Production, Testing, Development or etc
             */
            ItemMasterProxy iprox = new ItemMasterProxy("2", "PROD");

            Item = await iprox.DetailAsync(id);

            if (Item == null)
            {
                return(RedirectToPage("/Item/Index"));
            }
            return(Page());
        }