asp.net core contact form add multiple data in message body

Question

I am using this to send email from contact form

 

var message = new MimeMessage();
            message.From.Add(new MailboxAddress(_smtpSettings.SenderName, _smtpSettings.SenderEmail));
            message.To.Add(new MailboxAddress("[email protected]"));
            message.Subject = "Contact form communication";

            message.Body = new TextPart("html")
            {
                Text = "test message"
            };

            using (var client = new SmtpClient())
            {
                await client.ConnectAsync(_smtpSettings.Server, _smtpSettings.Port, true);

                client.AuthenticationMechanisms.Remove("XOAUTH2");

                await client.AuthenticateAsync(_smtpSettings.UserName, _smtpSettings.Password);
                await client.SendAsync(message);
                await client.DisconnectAsync(true);
            }

 which is working very well. But the body text I want to contain concatenated values from form

 

Text = ContactForm.Name + ContactForm.Email + ContactForm.Company + ContactForm.Message