public void Insert(ProductDTO productDto)
 {
     var product = new Product();
     product.InjectFrom(productDto);
     product.ObjectState = ObjectState.Added;
     _productService.Insert(product);
 }
 public void Update(ProductDTO productDto)
 {
     var product = new Product();
     product.InjectFrom(productDto);
     product.ObjectState = ObjectState.Modified;
     _productService.Update(product);
 }