c# - 在 ASP.NET 中将电子邮件发送给带有丹麦语字符的收件人

Question

我正在尝试使用电子邮件类 MailMessage 和 SMTPClient 在 ASP.NET 中发送电子邮件。该代码工作正常，但当收件人地址包含丹麦字符时，例如Niels.Østergaard@company.dk，Send() 方法抛出一个异常，提示地址的格式。如何解决这个问题？这段代码如下:

MailMessage mail = new MailMessage();

//set the addresses
MailAddress fromAddress = new MailAddress(from);

foreach (string s in to)
{
    mail.To.Add(new MailAddress(s));
}

mail.From = fromAddress;
mail.Subject = subject;
mail.Body = body;
mail.IsBodyHtml = false;

// Include attachments if any
if (files != null)
{
    foreach (string file in files)
    {
        mail.Attachments.Add(new Attachment(string.Format("{0}\\{1}", 
            HttpContext.Current.Server.MapPath("~/Temp"),  file)));
    }
}

// These settings should be retrieved from web.config
SmtpClient smtp = new SmtpClient();
smtp.DeliveryMethod = SmtpDeliveryMethod.SpecifiedPickupDirectory;
smtp.PickupDirectoryLocation = @"C:\Temp\Mail";
smtp.Send(mail);

Answer 1

我使用 http://msdn.microsoft.com/en-us/library/system.globalization.idnmapping.aspx 取得了一些成功来解决这个问题。

像这样:

        var m = new IdnMapping();
        var parts = "Niels.Østergaard@company.dk".Split('@');
        var adr = new MailAddress(string.Concat(
            m.GetAscii(parts[0]),
            "@",
            m.GetAscii(parts[1])));