I have 2 grid columns that are bound to 2 datetime fields. The database allows NULL values because there are times that a user can fill out some information on the form but leave the datetime empty. The problem is when I save the edited grid rows any blank datetime fields get saved back to the database as '1/1/1900 12:00 AM'. I have tried setting the ConvertEmptyStringToNull=true but it doesn't affect the save.