private void BtnPay_Click(object sender, EventArgs e) { try { if (radioCredit.Checked) { helper.CheckCreditCardNo(txtCreditNo.Text); helper.CheckSecurityNo(txtSecurityCode.Text); helper.CheckMonth(txtMonth.Text); helper.CheckYear(txtYear.Text); } flag = true; _payment.TypeID = radioCash.Checked ? 1 : 2; this.Close(); MessageBox.Show("Ödeme Başarılı"); } catch (Exception ex) { MessageBox.Show(ex.Message); } }