protected void GenarateField(string param)
{
BillInfo billInfo = billManager.GetBillInfo(param);
if (billInfo == null)
{
notificationLabel.Text = "Bill has no Record ";
}
else
{
dateTextBox.Text = billInfo.Bill_Voucher_date.ToString("yyyy/MM/dd");
paidTextBox.Text = billInfo.Paid_amount.ToString();
feeTextBox.Text = billInfo.Bill_total.ToString();
}
}