Opc.Ua.Configuration.CreateCertificateDlg.ApplicationNameTB_TextChanged C# (CSharp) Method

        private void ApplicationNameTB_TextChanged(object sender, EventArgs e)
        {
            try
            {
                if (!DomainsCK.Checked)
                {
                    DomainsTB.Text = System.Net.Dns.GetHostName();
                }

                // get the domain name.
                string domainName = DomainsTB.Text;
                int index = domainName.IndexOfAny(new char[] { ',', ';' });

                if (index > 0)
                {
                    domainName = DomainsTB.Text.Substring(0, index);
                }

                // update subject name.
                if (!SubjectNameCK.Checked)
                {
                    StringBuilder buffer = new StringBuilder();
                    buffer.Append("CN=");
                    buffer.Append(ApplicationNameTB.Text);

                    if (!String.IsNullOrEmpty(OrganizationTB.Text))
                    {
                        buffer.Append("/O=");
                        buffer.Append(OrganizationTB.Text);
                    }

                    buffer.Append("/DC=");
                    buffer.Append(domainName);

                    SubjectNameTB.Text = buffer.ToString();
                }

                // update application uri.
                if (!ApplicationUriCK.Checked)
                {
                    StringBuilder buffer = new StringBuilder();
                    
                    buffer.Append("urn:");
                    buffer.Append(domainName);

                    if (!String.IsNullOrEmpty(OrganizationTB.Text))
                    {
                        buffer.Append(":");
                        buffer.Append(OrganizationTB.Text);
                    }

                    buffer.Append(":");
                    buffer.Append(ApplicationNameTB.Text);

                    ApplicationUriTB.Text = buffer.ToString();
                }
            }
            catch (Exception exception)
            {
                GuiUtils.HandleException(this.Text, System.Reflection.MethodBase.GetCurrentMethod(), exception);
            }
        }