public ActionResult Create(string sessionId)
        {
            List <string> categories = CatalogueService.GetAllCategories();

            ViewData["categories"] = categories;
            List <string> unitsOfMeasure = CatalogueService.GetAllUnits();

            ViewData["unitsOfMeasure"] = unitsOfMeasure;
            ViewData["sessionId"]      = sessionId;
            return(View());
        }
        public ActionResult Update(long itemId, string sessionId)
        {
            ViewData["catalogue"] = CatalogueService.GetCatalogueById(itemId);
            List <string> categories = CatalogueService.GetAllCategories();

            ViewData["categories"] = categories;
            List <string> unitsOfMeasure = CatalogueService.GetAllUnits();

            ViewData["unitsOfMeasure"] = unitsOfMeasure;
            ViewData["sessionId"]      = sessionId;
            return(View());
        }