Okay. but seems like I have to first do a query to populate the gridview and then create the checkbox list control based upon the data in the gridview. I wonder if I should populate the basic table and then try to run counts using the data already in the gridview on a column and then create check boxes with counts. The alternative would be to run additional queries.

From there I will to trigger an update to the datatable with a new selection.

Thanks for the help! I will see what I can come up with.