public void delete(ProductsBooks productsBooks)
 {
     _productBooksDal.Delete(productsBooks);
 }
 public void update(ProductsBooks productsBooks)
 {
     _productBooksDal.Update(productsBooks);
 }
 public void add(ProductsBooks productsBooks)
 {
     ValidationTool.Validate(new ProductsBooksValidator(), productsBooks);
     _productBooksDal.Add(productsBooks);
 }