Forms Data Controls :: Looping Through Gridview Calling Visible False Cells?

I have a gridview that serves as a confirmation for user input in a previous form from a previous page. The grid is databound to a temporary table where I store the user's initial selections. The user can confirm what they had submitted, (which may be more than one row of information, up to three classes) or go back and change. When they hit the confirm button, I loop through the gridview and enter a row in a permanent database for each row in the gridview. This works great.

However, I don't want the gridview to display all of the columns that are actually in the temp database, because I'm carrying over 'usersubmitted, datesubmitted', etc, from the previous page for each class selected and this is redundant. (I do need to use all of the columns when they submit, however, to make a new row with complete information for each selected class in the permanent database) So, when I set the usersubmitted column visible false, for example, in the gridview, the dataset table adapter insert function fails with a data type mismatch error. I'm assuming becuase the column has to be visible, becuase when I make it visible again it works.

Can you loop through a gridview and call on cells in columns that are not visible?

The first page is like this:

the user fills out his info once in text boxes

name ____

address____

then selects up to three classes in dropdowns:

class one dropdown ...

class two dropdown....

for each dropdown, I insert name, address, class selected into a temp db Second page.

Gridview should display only classes selected, one row for each, and not

name address class selected

name address class selected

then when they submit, I insert

name address class selected

name address class selected

one row for each in permanant database