private void Dish_of_day_Click(object sender, EventArgs e) { Store store = new Store(); store.FillTestData(100); Book_of_recipes book_Of_Recipes = new Book_of_recipes(); book_Of_Recipes.FillTestData(100); Recipe result = book_Of_Recipes.FindBest(store); if (result == null) { MessageBox.Show("Недостаточно продуктов для блюда"); } else { MessageBox.Show(result.Name); } }