无法在邮件标题C#中添加回复

Question

我正在开发Windows Form Application,Dot net Framework 4.用于发送SMTP电子邮件.

我正在使用以下代码发送电子邮件.

MailMessage mail = new MailMessage("\"Company Name\" <info@company.com>", textBox_Email_to.Text);

SmtpClient client = new SmtpClient();
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Host = "host name";

mail.Subject = "test email";
mail.Body = file; // file contains some text
mail.Headers.Add("reply-to", "service@company.de");
mail.IsBodyHtml = true;
client.Send(mail);

唯一的问题mail.Headers.Add("reply-to", "service@company.de");是无法正常工作.

我也试过用 mail.ReplyTo = new MailAddress("service@company.de");

但它仍然不起作用.使用时mail.ReplyTo我收到此警告:

'System.Net.Mail.MailMessage.ReplyTo'已过时:'"对于此类型,ReplyTo已废弃.请使用ReplyToList代替,它可以接受多个地址.

Answer 1

异常告诉您该怎么做 - 使用ReplyToList:

在你的情况下它看起来像这样:

        MailMessage mail = new MailMessage("\"Company Name\" <info@company.com>", textBox_Email_to.Text);

        SmtpClient client = new SmtpClient();
        client.DeliveryMethod = SmtpDeliveryMethod.Network;
        client.UseDefaultCredentials = false;
        client.Host = "host name";

        mail.Subject = "test email";
        mail.Body = file; // file contains some text

        //mail.Headers.Add("reply-to", "service@company.de");
        mail.ReplyToList.Add(new MailAddress("service@company.de", "reply-to"));

        mail.IsBodyHtml = true;
        client.Send(mail);