Please Help. I am trying to aggregate a column in a datagridview. I know how to get it to work if I bind a database to it, I have several of them working perfectly, but I have one datagrid that is not bound to a database and for the life of me can not fiqure out the Linq code (if there is one). If you can help, I would appreciate it.

As an example, I have three columns. Product, Qty, Unit Price. I would like it to Multiply the Unit price with the Qty and sum it up in a textbox.

Thanks,