public void addVehicle()
{
Vehicle vech = new Vehicle();
vech.Name = nameText.Text;
vech.Serial_number = serialNumText.Text;
vech.Buy_date = this.buyDateTimePicker.Value;
vech.Last_service_date = this.serviceDateTimePicker.Value;
vech.Remark = remarkText.Text;
InsertSQL vechHnd = new InsertSQL();
int addrecord = vechHnd.addNewVehicle(vech);
MessageBox.Show(addrecord + "Your record is added");
}