C#实现异步发送邮件的方法

本文实例讲述了c#实现异步发送邮件的方法。分享给大家供大家参考。具体如下：

下面的代码可以实现异步发送邮件，等邮件发送出去后会自动调用回调函数，这样在发送邮件时就不会卡住程序不动了

mailmessage m = new mailmessage
  ("[e-mail]",
  "[e-mail]",
  "this is the subject for the authorized email.",
  "this is the body of the authorized mail!...");
// send the message using authorization
smtpclient client = new smtpclient("smtp.jb51.net");
client.credentials = new networkcredential("user", "password");
client.enablessl = true;
// add the event handler
client.sendcompleted += new sendcompletedeventhandler(mail_sendcompleted);
// send the message asynchronously
client.sendasync(m, null);
// to cancel the send
//client.sendasynccancel();
void mail_sendcompleted(object sender, asynccompletedeventargs e)
{
  if (e.cancelled)
    console.writeline("message cancelled");
  else if (e.error != null)
    console.writeline("error: " + e.error.tostring());
  else
    console.writeline("message sent");
}

希望本文所述对大家的c#程序设计有所帮助。