nopcommerce - how to call insert method when click on product? -

i want display 10 viewed product in category page made insert method in

nopcommerce_3.20_source\libraries\nop.services\catalog\productservice.cs 

---

public virtual void insertmostviewproduct(mostviewproduct product) {         if (product == null)            throw new argumentnullexception("product");         //insert         _mostviewrepository.insert(product);          //clear cache         _cachemanager.removebypattern(products_pattern_key);          //event notification         _eventpublisher.entityinserted(product);  } 

my question how should call method when click on product , entry save in database?

please advise.

i tracked first question displaying 10 viewed product.

you have add functionality product service , in catalog controller of nop.web project have add called newly created method in product service in product action