private void btnAProceed_Click(object sender, EventArgs e) { customers = new VO.CustomersVO(); customers.Custcode = txtBoxCustCode.Text; customers.Companyname = txtBoxCompany.Text; String[] getScammer = customers.ReadCheckoutInfo(); Double creditlimit = 0; Double customerbalance = 0; Double currentbalance = 0; customerbalance = Convert.ToDouble(getScammer[0]); creditlimit = Convert.ToDouble(getScammer[1]); currentbalance = customerbalance + Convert.ToDouble(lblTotalAmountAR.Text); // if (creditlimit == 0) { Custcode = txtBoxCustCode.Text; Company = txtBoxCompany.Text; IsARTX = true; this.Close(); } if (creditlimit >= currentbalance) { Custcode = txtBoxCustCode.Text; Company = txtBoxCompany.Text; IsARTX = true; this.Close(); } else { cstDlgAlert alert = new cstDlgAlert(); alert.MsgDiri = "Account has Exceeded \nP " + creditlimit.ToString("#,###,##0.00") + " Credit Limit"; alert.ShowDialog(); } }