public void LoadPaymentDetailFromDB()
{
List <PaymentDetail> paymentDetail = new List <PaymentDetail>();
paymentDetail.Clear();
List <string> rooms = new List <string>();
rooms.Clear();
rooms.AddRange(RentInfo.GetRoomNameByCustomerID(((Customer)cbCustomerName.SelectedItem).IdCardNumber));
foreach (var item in rooms)
{
paymentDetail.AddRange(PaymentDetail.GetPaymentDetailByRoomName(item));
}
paymentDetails.Clear();
foreach (var item in paymentDetail)
{
paymentDetails.Add(item);
}
}