Help with Gridview Foreach and Row Cells

[mfawn]

I have a gridview that I have added some checkboxes too. I have a
foreach loop that is returning if a checkbox has been clicked but I
also need to pull back one of the colums in that row so I know what
category is clicked.

EG:

Row 1 has a category id of 3 and checkbox is unchecked.
Row 2 has a category id of 12 and checkbox is unchecked.
Row 3 has a category id of 23 and checkbox is checked.
Row 4 has a category id of 54 and checkbox is unchecked.

I can get that the row 3 is checked but I can't get back the category
id to add it to the database.

I'm trying something like this:

foreach (GridViewRow di in GridView1.Rows)
{
CheckBox chkBx = (CheckBox)di.FindControl("ShowAddress");
if (chkBx != null && chkBx.Checked)
// add DB code here
}