private void RequestNewCertificatePushMode(object sender, EventArgs e)
        {
            try
            {
                byte[] certificateRequest = m_server.CreateSigningRequest(
                    null,
                    m_server.ApplicationCertificateType,
                    null,
                    false,
                    null);
                var    domainNames = m_application.GetDomainNames(m_certificate);
                NodeId requestId   = m_gds.StartSigningRequest(
                    m_application.ApplicationId,
                    null,
                    null,
                    certificateRequest);

                m_application.CertificateRequestId = requestId.ToString();
                CertificateRequestTimer.Enabled    = true;
                RequestProgressLabel.Visible       = true;
                WarningLabel.Visible = false;
            }
            catch (Exception ex)
            {
                Opc.Ua.Client.Controls.ExceptionDlg.Show(Text, ex);
            }
        }