public static void DeleteProduct(int productId)
 {
     DBDirectory.DeleteProduct(productId);
 }
 public static int SaveOrUpdateProduct(Product item)
 {
     return(DBDirectory.SaveOrUpdateProduct(item));
 }
 public static Product GetProduct(int productId)
 {
     return(DBDirectory.GetProduct(productId));
 }
 public static List <Product> GetProducts()
 {
     return(DBDirectory.GetProducts());
 }