C# 邮件群发 示例代码

【实例简介】C#群发邮件
【实例截图】
【核心代码】

using System;
using System.Collections.Generic;
using System.Text;
using MassSendEmail.model;
using System.Net;
using System.Net.Mail;
using MassSendEmail.util;
using System.Threading;
using System.Collections;

namespace MassSendEmail.control
{
    public class ResultArgs:EventArgs
    {
        private EmailAddressInfo resultEmailInfo = null;

        public EmailAddressInfo ResultEmailInfo
        {
            get { return resultEmailInfo; }
        }
        public ResultArgs(EmailAddressInfo info)
        {
            resultEmailInfo = info;
        }
    }

    public class EmailManager
    {
        private bool _isdisposed_ = false;
        private bool _issend_right_now_ = false;
        private Thread thread_;
        private List<string> emailList = new List<string>();
        private MailMessage myMail;
        private SmtpClient smtp;
        public event EventHandler<ResultArgs> SendCompleted;

        public EmailManager()
        {
            thread_ = new Thread(new ThreadStart(SendEmailSync));
            thread_.Start();
        }

        private void OnSendCompleted(EmailAddressInfo info) 
        {
            if (SendCompleted != null)
            {
                SendCompleted(this,new ResultArgs(info));
            }
        }

        private bool sendEmail(string info)
        {
            try
            {
                myMail = new MailMessage();

                myMail.From = new MailAddress(ConfigHandle.addressfrom, ConfigHandle.displayname);
                myMail.To.Add(new MailAddress(info));

                myMail.Subject = "武汉宜家美居装饰工程";
                myMail.SubjectEncoding = Encoding.UTF8;

                myMail.Body = ConfigHandle.sendcontent;
                myMail.BodyEncoding = Encoding.UTF8;
                myMail.IsBodyHtml = true;

                smtp = new SmtpClient();
                smtp.Host = "smtp.qq.com";
                smtp.Credentials = new NetworkCredential(ConfigHandle.addressfrom, ConfigHandle.password);
                smtp.Send(myMail);
                return true;
            }
            catch(Exception ex) {
                return false;
            }
        }

        public void AddEmail(List<string> list)
        {
            lock (((ICollection)(emailList)).SyncRoot)
            {
                foreach (var temp in list)
                {
                    emailList.Add(temp);
                }
            }
        }

        public void dispose()
        {
            _isdisposed_ = true;
            thread_.Abort();
        }

        private void SendEmailSync()
        {
            bool flag = false;
            while (true)
            {
                if (_isdisposed_)
                    break;
                lock (((ICollection)(emailList)).SyncRoot)
                {
                    if (emailList.Count != 0)
                    {
                        try
                        {
                            flag = sendEmail(emailList[0]);
                            OnSendCompleted(new EmailAddressInfo()
                            {
                                Address_content = emailList[0],
                                Successed = flag
                            });
                            emailList.RemoveAt(0);
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine(ex.Message);
                        }
                    }
                }
            }
        }
    }
}