How to add scanned items from a barcode reader to gridview at run time?

Question

Hi there, I have a barcode reader which scans the barcode of a product(s). Upon scanning the barcode I can quite easily get the selected product.

My problem is how would I go about implementing my software, such that for each product that I scan, how can I get these scanned items to appear in the gridview dynamically at run time...? I am creating a winforms application. Not ASP.NET.

My gridview contains the following columns::       Prod ID | Name | Quantity | Price | Total.

Any suggestions would be of great help. What would be a good logic?

Kind regards

Maz