MailMessage message = new MailMessage();
message.From = new MailAddress("hkar@gmail.com");
message.Subject = "Subject";
message.Body = "Please login";
SmtpClient smtp = new SmtpClient();
message.To.Add("karaman@gmail.com");
smtp.Send(message);
我想在发送的邮件正文中有一个超链接,上面写着“登录”。我怎样才能做到这一点?