Sending a list of mails with SmtpClient
- by Malcolm Frexner
I use SendCompletedEventHandler of SmtpClient when sending a list of emails.
The SendCompletedEventHandler is only called when have already sent all emails in the list.
I expexted, that SendCompletedEventHandler is called one an email is send.
Is there something wrong in my code?
public void SendAllNewsletters(List<string> recipients)
{
string mailText = "My Tex";
foreach(string recipient in recipients)
{
//if this loop takes 10min then the first call to
//SendCompletedCallback is after 10min
SendNewsletter(mailText,recipient);
}
}
public bool SendNewsletter(string mailText , string emailaddress)
{
SmtpClient sc = new SmtpClient(_smtpServer, _smtpPort);
System.Net.NetworkCredential SMTPUserInfo = new System.Net.NetworkCredential(_smtpuser, _smtppassword);
sc.Credentials = SMTPUserInfo;
sc.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
MailMessage mm = null;
mm = new MailMessage(mailText, emailaddress);
mm.IsBodyHtml = true;
mm.Priority = MailPriority.Normal;
mm.Subject = "Something";
mm.Body = "Something";
mm.SubjectEncoding = Encoding.UTF8;
mm.BodyEncoding = Encoding.UTF8;
//Mail
string userState = emailaddress;
sc.SendAsync(mm, userState);
return true;
}
public void SendCompletedCallback(object sender, AsyncCompletedEventArgs e)
{
// Get the unique identifier for this asynchronous operation.
String token = (string)e.UserState;
if (e.Error != null)
{
_news.SetNewsletterEmailsisSent(e.UserState.ToString(), _newslettername, false, e.Error.Message);
}
else
{
_news.SetNewsletterEmailsisSent(e.UserState.ToString(), _newslettername, true, string.Empty);
}
}
