private void OnLoadDataExecute() { Products = new ObservableCollection <Product>(_productsRepository.GetAllProducts()); FridgeLookups = new ObservableCollection <FridgeProductLookup>(_fridgeRepository.GetAllFridgeLookups()); Categories = new ObservableCollection <ProductCategory>(_productsRepository.GetAllCategories()); Fridge = _fridgeRepository.GetFridge(); if (Categories.Count > 0) { SetProductsByCategory(Categories[0]); SelectedCategory = Categories[0]; } }