private void btnNext_Click(object sender, EventArgs e) { if (cmbPaymentMethods.SelectedIndex == -1 || cmbPaymentOption.SelectedIndex == -1) { MessageBox.Show("Make sure that you have selected the payment option and method", "Invalid Selection", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { if (cmbPaymentOption.SelectedItem.ToString() == "Deposit") { checkDepositStatus(txtBookingNo.Text); } else { DBConnect pay = new DBConnect(); bool success = pay.updateChargeTotal(txtBookingNo.Text); if (success == true) { SelectBooking(txtBookingNo.Text); } else { MessageBox.Show("Connection is faild try again please", "Invalid Connection", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } }