從C＃代碼發送電子郵件

Question

我想從我的C＃code.Here發送電子郵件是一個例子

MailMessage message = new MailMessage(); 
      message.To.Add("milos90zr@gmail.com"); 
      message.Subject = "Registration"; 
      message.From = new System.Net.Mail.MailAddress("milos90zr@hotmail.com"); 
      message.Body = "OK"; 
      SmtpClient smtp = new SmtpClient(); 
      smtp.Host = "smtp.gmail.com"; 
      smtp.Send(message); 

但我的代碼休息和這裏的錯誤：

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. hn4sm3874638bkc.2 - gsmtp 

Answer 1

你必須打開加密。

將這個行前地方smtp.Send()

smtpClient.EnableSsl = true;