Updating a datatable and also validating a check box

[dougancil]

I have a datagridview that has a checkbox. That checkbox will designate if a day is a "Holiday" or not. When then user clicks on my save event, I want my sub to check to see if that box is checked and appending the data to a table in my database. I've never done this before and would appreciate any help that I can get. Thank you.