Adding records in Data Grid View

Question

what codes will be used in adding records (btn_Add)  from

1. txtProduct   2. txtQuantity   3. txtPrice

to the Data Grid View without saving it on the database.

meaning, you can able to view what have you added once, but haven't saved it yet.

I established a table in the sql with the ff. field names:

1. ProductName   nvarchar(50)   2. Quantity  nvarchar(50)  3. Price    nvarchar(50)

you could have the access to get the contents from the data grid view.