Question

我想在我的控制台应用程序中发送电子邮件。我用过：

SmtpClient client = new SmtpClient();
                    MailMessage msg = new MailMessage();
                    MailAddress to = new MailAddress("informatyka4445@wp.pl");
                    MailAddress from = new MailAddress("informatyka4444@wp.pl");
                    msg.IsBodyHtml = true;
                    msg.Subject = "Mail Title";
                    msg.To.Add(to);
                    msg.Body = "Your message";
                    msg.From = from;
                    try {
                        client.Send(msg);//THIS CAUSES ERROR
                    } catch (InvalidOperationException e) {
                        Console.WriteLine(e);
                    }

它会导致：

A first chance exception of type 'System.InvalidOperationException' occurred in System.dll

此代码的作者说应该添加：

<system.net>
    <mailSettings>
      <smtp deliveryMethod="Network">
        <network host="smtp.gmail.com" port="587" userName="your email address" password="your password" defaultCredentials="false" enableSsl="true" />
      </smtp>
    </mailSettings>
  </system.net>

到Web.config但这不是ASP .NET MVC应用程序，我也没有看到任何Web配置。

Answer 1

如果您不使用任何配置文件，则必须在代码中配置SMTP客户端。例如：

 SmtpClient smtp = new SmtpClient();
 smtp.Host = "smtp.gmail.com"; 
 smtp.UseDefaultCredentials = false;
 smtp.Credentials = System.Net.NetworkCredential("youremail", "yourpassword");
 smtp.EnableSsl = true;

通过SmtpClient发送电子邮件会导致system.dll中出现'System.InvalidOperationException

1 个答案: