Insert lines of data from datagridview into sql database

Hi,
Then insert values using insert query.......

thanks Sam, unfortunately in not an experienced developer. however i am not using this datagridview to view data from an sql table but i am using it as a shopping cart where insert values from different textboxes till i have above 20 lines of Products, measure, cost, purpose.

now it these lines that i want to insert into the database table.