protected void btnadd_Click(object sender, EventArgs e)
    {
        tblAllottee _allotte = Allottee.GetAllottee(txtQuarterNumber.Text);

        if (_allotte != null)
        {
            decimal charge = 0;
            decimal.TryParse(txtPayment.Text, out charge);
            tbChallan quarterDamage = new tbChallan();
            quarterDamage.AAN           = _allotte.AAN;
            quarterDamage.Payment       = charge;
            quarterDamage.ChallanNumber = txtChallanNumber.Text;
            quarterDamage.BankName      = txtBankName.Text;
            quarterDamage.DateRecevied  = Convert.ToDateTime(txtMonth.Text);
            quarterDamage.QuarterNumber = _allotte.tblQuarter.QuarterNumber;
            quarterDamage.Remarks       = txtRemarks.Text;
            Quarters.AddChallan(quarterDamage);
            lblmessage.Text    = "Information saved sucessfully!";
            lblmessage.Visible = true;
            empty();
            tbluserhistory _userhistory = new tbluserhistory();
            _userhistory.Action      = "Licence fee";
            _userhistory.description = _user.Username + " has added quarter damage charges for quarter " + _allotte.tblQuarter.QuarterNumber;
            _userhistory.time        = DateTime.Now;
            _userhistory.useraan     = _user.AAN;
            userHistory.Save(_userhistory);
        }
        else
        {
            lblmessage.Text    = "This quarter is not allotted to anyone yet";
            lblmessage.Visible = true;
        }
    }