private async void LoadProducts()
        {
            ProductsList.Clear();
            List <ProductInventoryModel> products = null;
            await Task.Run(() =>
            {
                products = serviceRepository.LoadProductInventory();
            });

            ProductsList.AddRange(products);
        }
        public void OnPost()
        {
            try
            {
                _system.DrugSystem.Environment.Language        = Language.English;
                _system.DrugSystem.Environment.DrugTerminology = DrugTerminology.MDDF;
                _system.DrugSystem.Environment.AttributePopulation.All();

                var filter = new Filter
                {
                    DrugClass =
                    {
                        Brand          = true,
                        BrandedGeneric = true
                    }
                };

                var products = _system.DrugSystem.Navigation.GetProductsByName(SearchTerm, filter);

                ProductsList.AddRange(products);
            }
            catch (FDBApplicationException fdbAppException)
            {
                Console.WriteLine("An FDB Application Exception was thrown");
                Console.WriteLine(fdbAppException.Message);
                if (fdbAppException.InnerException != null)
                {
                    Console.WriteLine(fdbAppException.InnerException.Message);
                }
                Console.WriteLine(fdbAppException.StackTrace);
                throw;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                Console.WriteLine(e.StackTrace);
            }
        }