private void BookingForm_Load(object sender, EventArgs e) { lb_Products.DisplayMember = "Title"; lb_Services.DisplayMember = "Title"; cb_employee.DataSource = employeeController.GetEmployees(); cb_employee.DisplayMember = "FirstName"; dgv_bookings.DataSource = bookingsController.GetBookingsByEmployee((Employee)cb_employee.SelectedItem, dateTime1.SelectionStart); //dgv_bookings.DataSource = bookingsController.GetAllBookings(); }