非常急!邮件问题

Question

没用过vs的net.mail．
我只用过jmail收发邮件，一切ＯＫ！

Answer 1

msg.DeliveryMethod = SmtpDeliveryMethod.Network;加上这句

Answer 2

/*****************************************/
/* Project name: MailDaemon              */
/* Module name: Mail Sender              */
/* Author: Ming Yeh                      */
/* Created date: 2006-08-21              */
/* Last modified by:                     */
/* Last modify date:                     */
/*                .-._                   */
/*               {_}^ )o                 */
/*      {\________//~`                   */
/*       (         )                     */
/*       /||~~~~~||\                     */
/*      |_\\_    \\_\_                   */
/*                                       */
/*****************************************/
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Mail;
using System.Text;namespace mailDaemon
{
    class MailSender
    {
        private const string SERVER_IP = "61.181.255.80";
        private const string SENDER_EMAIL = "[email protected]";
        private const string USERNAME = "mailist";
        private const string PASSWORD = "bu2kwh1at";
        private const string SUBJECT = "高速路商机速递";
        string _server;
        string _senderEmail;
        string _username;
        string _password;
        static bool mailSent = false;        public MailSender(string server, string senderEmail, string username, string password)
        {
            _server = server;
            _senderEmail = senderEmail;
            _username = username;
            _password = password;
        }
        public MailSender():this(SERVER_IP, SENDER_EMAIL, USERNAME, PASSWORD)
        {
            
        }
        public void SendMail(string email, string content)
        {
            MailMessage msg = new MailMessage(_senderEmail, email, SUBJECT, content);
            msg.BodyEncoding = Encoding.UTF8;
            msg.Priority = MailPriority.High;
            msg.IsBodyHtml = true;
            SmtpClient client = new SmtpClient(_server);
            NetworkCredential credential = new NetworkCredential(_username, _password);
            client.UseDefaultCredentials = false;
            client.Credentials = credential;
            client.SendCompleted += new SendCompletedEventHandler(client_SendCompleted);
            client.SendAsync(msg, "Message Sent.");
            Console.WriteLine(email + "邮件发送中，按C取消发送");
            //string answer = Console.ReadLine();
            //if (answer.StartsWith("c") && mailSent == false)
            //{
            //    client.SendAsyncCancel();
            //}
            Console.WriteLine(email + "处理完成");
        }        void client_SendCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
        {
            String token = (string)e.UserState;            if (e.Cancelled)
            {
                Console.WriteLine("[{0}] Send canceled.", token);
            }
            if (e.Error != null)
            {
                Console.WriteLine("[{0}] {1}", token, e.Error.ToString());
            }
            else
            {
                Console.WriteLine("Message sent.");
            }
            mailSent = true;
        }
    }
}

Answer 3

2.0的  
System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
            mail.To.Add("[email protected]");
            mail.From = new System.Net.Mail.MailAddress("[email protected]", "收信", System.Text.Encoding.UTF8);
            mail.Subject = "哈哈";
            mail.SubjectEncoding = System.Text.Encoding.UTF8;
            mail.Body = "abc";
            mail.BodyEncoding = System.Text.Encoding.UTF8;
            mail.IsBodyHtml = true;
            mail.Priority = System.Net.Mail.MailPriority.High;            System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
            client.Host = "smtp.163.com";
            client.Port = 587;
            client.EnableSsl = true;
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential("[email protected]", "skwin123");
            client.Send(mail);