protected string DisplayDaysOnJob(Northwind.EmployeesRow employee) { // Make sure HiredDate is not null... if so, return "Unknown" if (employee.IsHireDateNull()) return "Unknown"; else { // Returns the number of days between the current // date/time and hiredDate TimeSpan ts = DateTime.Now.Subtract(employee.HireDate); return ts.Days.ToString("#,##0"); } }