C#.NET发EMAIL的几种方法 MailMessage/SmtpClient/CDO.Message

using System;using System.Collections.Generic;using System.Text;using System.Web;using System.Net.Mail;using System.Net;namespace Pub.Class{    /// <summary>    /// 发送Email类    /// </summary>    public class Email    {        #region 私有成员        private static object lockHelper = new object();        private string _From;        private string _FromEmail;        private string _Subject;        private string _Body;        private string _SmtpServer;        private string _SmtpPort = "25";        private string _SmtpUserName;        private string _SmtpPassword;        private System.Web.Mail.MailFormat _Format = System.Web.Mail.MailFormat.Html;        private System.Text.Encoding _Encoding = System.Text.Encoding.Default;        #endregion        #region 属性        /// <summary>        /// 正文内容类型        /// </summary>        public System.Web.Mail.MailFormat Format { set { _Format = value; } }        /// <summary>        /// 正文内容编码        /// </summary>        public System.Text.Encoding Encoding { set { _Encoding = value; } }        /// <summary>        /// FromEmail 发送方地址(如[e-mail])         /// </summary>        public string FromEmail { set { _FromEmail = value; } }        /// <summary>        /// From        /// </summary>        public string From { set { _From = value; } }        /// <summary>        /// 主题        /// </summary>        public string Subject { set { _Subject = value; } }        /// <summary>        /// 内容        /// </summary>        public string Body { set { _Body = value; } }        /// <summary>        /// SmtpServer        /// </summary>        public string SmtpServer { set { _SmtpServer = value; } }        /// <summary>        /// SmtpPort        /// </summary>        public string SmtpPort { set { _SmtpPort = value; } }        /// <summary>        /// SmtpUserName        /// </summary>        public string SmtpUserName { set { _SmtpUserName = value; } }        /// <summary>        /// SmtpPassword        /// </summary>        public string SmtpPassword { set { _SmtpPassword = value; } }        #endregion        #region 构造器        /// <summary>        /// 构造器        /// </summary>        public Email() { }        #endregion        #region Send        /// <summary>        /// 发送EMAIL        /// </summary>        /// <example>        /// <code>        ///     Email _Email = new Email();        ///     _Email.FromEmail = "[e-mail]";        ///     _Email.Subject = "<div>aaaa</div>";        ///     _Email.Body = "aaaaaaaaaaaaa";        ///     _Email.SmtpServer = "smtp.163.com";        ///     _Email.SmtpUserName = "aaa";        ///     _Email.SmtpPassword = "aaa";        ///     _Email.Send("[e-mail]");        /// </code>        /// </example>        /// <param name="toEmail">收信人 接收方地址</param>        /// <returns>成功否</returns>        public bool SmtpMailSend(string toEmail) {            lock (lockHelper) {                System.Web.Mail.MailMessage msg = new System.Web.Mail.MailMessage();                try {                    msg.From = _FromEmail;//发送方地址(如[e-mail])                     msg.To = toEmail;//接收方地址                    msg.BodyFormat = _Format;//正文内容类型                    msg.BodyEncoding = _Encoding;//正文内容编码                    msg.Subject = _Subject;//主题                    msg.Body = _Body;//内容                    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");//设置为需要用户验证                    if (!_SmtpPort.Equals("25")) msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", _SmtpPort);//设置端口                    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", _SmtpUserName);//设置验证用户名                    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", _SmtpPassword);//设置验证密码                    System.Web.Mail.SmtpMail.SmtpServer = _SmtpServer;//邮件服务器地址(如smtp.163.com)                     System.Web.Mail.SmtpMail.Send(msg);//发送                     return true;                } catch { } finally {                                    }            }            return false;         }        /// <summary>        /// 发送EMAIL        /// </summary>        /// <param name="toEmail">Email</param>        /// <returns>是否成功</returns>        public bool CDOMessageSend(string toEmail) {            lock (lockHelper) {                CDO.Message objMail = new CDO.Message();                try {                    objMail.To = toEmail;                    objMail.From = _FromEmail;                    objMail.Subject = _Subject;                    if (_Format.Equals(System.Web.Mail.MailFormat.Html)) objMail.HTMLBody = _Body; else objMail.TextBody = _Body;                    //if (!_SmtpPort.Equals("25")) objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpserverport"].Value = _SmtpPort; //设置端口                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpserver"].Value = _SmtpServer;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/sendusing"].Value = 1;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout"].Value = 10;                    objMail.Configuration.Fields.Update();                    objMail.Send();                    return true;                } catch {} finally{                                    }                System.Runtime.InteropServices.Marshal.ReleaseComObject(objMail);                objMail = null;            }            return false;         }        /// <summary>        /// CDOMessageSend        /// </summary>        /// <param name="toEmail"></param>        /// <param name="sendusing"></param>        /// <returns></returns>        public bool CDOMessageSend(string toEmail,int sendusing) {            lock (lockHelper) {                CDO.Message objMail = new CDO.Message();                try {                    objMail.To = toEmail;                    objMail.From = _FromEmail;                    objMail.Subject = _Subject;                    if (_Format.Equals(System.Web.Mail.MailFormat.Html)) objMail.HTMLBody = _Body; else objMail.TextBody = _Body;                    if (!_SmtpPort.Equals("25")) objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpserverport"].Value = _SmtpPort; //设置端口                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpserver"].Value = _SmtpServer;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/sendusing"].Value = sendusing;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/sendemailaddress"].Value = _FromEmail;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpuserreplyemailaddress"].Value = _FromEmail;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpaccountname"].Value = _SmtpUserName;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/sendusername"].Value = _SmtpUserName;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"].Value = _SmtpPassword;                    objMail.Configuration.Fields["http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"].Value=1;                        objMail.Configuration.Fields.Update();                    objMail.Send();                    return true;                } catch { } finally{                                    }                System.Runtime.InteropServices.Marshal.ReleaseComObject(objMail);                objMail = null;            }            return false;        }        /// <summary>        /// SmtpClientSend        /// </summary>        /// <param name="toEmail"></param>        /// <returns></returns>        public bool SmtpClientSend(string toEmail) {            lock (lockHelper) {                System.Net.Mail.MailMessage message = new MailMessage(_FromEmail, toEmail, _Subject, _Body);                message.SubjectEncoding = _Encoding;                message.BodyEncoding = _Encoding;                message.IsBodyHtml = true;                message.Priority = MailPriority.High;                SmtpClient client = new SmtpClient(_SmtpServer);                client.UseDefaultCredentials = false;                client.Credentials = new NetworkCredential(_SmtpUserName, _SmtpPassword);                client.DeliveryMethod = SmtpDeliveryMethod.Network;                client.Port = Str.ToInt(_SmtpPort, 587);                client.EnableSsl = true;                try {                    client.Send(message);                } catch {                    return false;                }                return true;            }        }        #endregion    }} 多线程服务调用： using System;using System.Collections.Generic;using System.ComponentModel;using System.Configuration.Install;using System.ServiceProcess;using System.Collections;using System.Threading;using System.Xml;using System.IO;using System.Net.Mail;using System.Runtime.Remoting.Channels.Tcp;using System.Runtime.Remoting.Channels;using System.Runtime.Remoting;using Pub.Class;using System.Diagnostics;namespace MailService {    [RunInstaller(true)]    public partial class MService : ServiceBase {        public static bool isRun = false;        public Queue emailQueue = new Queue();        private Thread readEmailThread;        private Thread[] sendEmailThread;        private string[] strList = new string[] { "MailService 启动成功！", "MailService 停止！", "{2} {1} - [{0}] - 发送失败!", "{2} {1} - [{0}] - 发送成功!", "LiveRemotingService 已启动，服务端口6669。", "LiveRemotingService 停止！" };        private struct Config {                                                                                                                                                                                                                                                 public string Conn;            public string LogFile;            public string SmtpServer;            public string UserName;            public string Password;            public string FromAddress;            public int AmountThread;            public int RecordCount;            public int TimeInterval;        }        private Config config = new Config();        public MService() {            System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;            InitializeComponent();            if (!System.Diagnostics.EventLog.SourceExists("MailSource")) System.Diagnostics.EventLog.CreateEventSource("MailSource", "MailServiceLog");            this.eventLog1.Source = "MailSource";            this.eventLog1.Log = "MailServiceLog";            this.eventLog2.Source = "LiveRemotingSource";            this.eventLog2.Log = "MailServiceLog";        }        protected override void OnStart(string[] args) {            try {                InitConfig();                this.eventLog1.WriteEntry(strList[0], System.Diagnostics.EventLogEntryType.SuccessAudit);                this.timer1.Interval = config.TimeInterval * 1000;                this.timer1.Enabled = true;                sendEmailThread = new Thread[config.AmountThread];            } catch (Exception e) {                this.eventLog1.WriteEntry(e.ToString(), System.Diagnostics.EventLogEntryType.Error);            }        }        protected override void OnStop() {            this.eventLog1.WriteEntry(strList[1], System.Diagnostics.EventLogEntryType.SuccessAudit);            GC.Collect();            this.timer1.Enabled = false;        }        private void timer1_Elapsed(object sender, System.Timers.ElapsedEventArgs e) {            if (isRun) return;            timer1.Enabled = false;            readEmailThread = new Thread(new ThreadStart(ReadEmailQuque));             readEmailThread.IsBackground = true;            readEmailThread.Start();        }        private void InitConfig(){            config.Conn = Pub.Class.WebConfig.GetApp("ConnString");            config.LogFile = Pub.Class.WebConfig.GetApp("logFile");            config.SmtpServer = Pub.Class.WebConfig.GetApp("SmtpServer");            config.UserName = Pub.Class.WebConfig.GetApp("UserName");            config.Password = Pub.Class.WebConfig.GetApp("Password");            config.FromAddress = Pub.Class.WebConfig.GetApp("FromAddress");            string amountThread = Pub.Class.WebConfig.GetApp("AmountThread");            config.AmountThread = amountThread.Equals("") ? 1 : Convert.ToInt32(amountThread);            config.AmountThread = config.AmountThread < 1 ? 1 : config.AmountThread;            string recordCount = Pub.Class.WebConfig.GetApp("RecordCount");            config.RecordCount = recordCount.Equals("") ? 1000 : Convert.ToInt32(recordCount);            config.RecordCount = config.RecordCount < 1000 ? 1000 : config.RecordCount;            string timeInterval = Pub.Class.WebConfig.GetApp("TimeInterval");            config.TimeInterval = timeInterval.Equals("") ? 1000 : Convert.ToInt32(timeInterval);            config.TimeInterval = config.TimeInterval < 2 ? 2 : config.TimeInterval;        }        private void ReadEmailQuque(){            timer1.Enabled = true;            IList<EC_EmailList> list = EC_EmailListFactory.Instance().SelectListByTop(config.RecordCount);            if (list.Count == 0) return;            isRun = true;            for (int i = 0; i < list.Count; i++) {                emailQueue.Enqueue(list[i]);            }            for (int i = 0; i < config.AmountThread; i++) {                sendEmailThread[i] = new Thread(new ThreadStart(DoSendEmail));                sendEmailThread[i].Name = "Thread" + (i+1).ToString();                sendEmailThread[i].Start();            }            list = null;        }        private void DoSendEmail(){            while (true) {                EC_EmailList objMail;                lock(this){                    if (emailQueue.Count>0) {                        objMail = (EC_EmailList)emailQueue.Dequeue();                    } else {                        isRun = false;                        return;                    }                }                int mailID = (int)objMail.EmailID;                string strTo = objMail.To;                string strSubject = objMail.Subject;                string strBody = objMail.Body;                string strFrom = objMail.From;                string smtpServer = objMail.SmtpServer;                string userName = objMail.UserName;                string password = objMail.Password;                bool isTrue = SendMail(strTo, strSubject, strBody, strFrom, smtpServer, userName, password, "");                EC_EmailListFactory.Instance().DeleteByID(mailID);            }        }        public bool SendMail(string strTo, string strSubject, string strBody,                             string strFrom, string smtpServer, string userName,                             string password, string attachments) {            Email email = new Email();            string strSmtpServer = smtpServer.Length > 0 ? smtpServer : config.SmtpServer.Trim();            email.SmtpServer = strSmtpServer;            email.SmtpUserName = userName.Length > 0 ? userName : config.UserName.Trim();            email.SmtpPassword = password.Length > 0 ? password : config.Password.Trim();            email.SmtpPort = strSmtpServer.ToLower().Contains("gmail") ? "587" : "25";            email.EnableSsl = strSmtpServer.ToLower().Contains("gmail") ? true : false;            email.FromEmail = strFrom.Length > 0 ? strFrom : config.FromAddress.Trim();            email.Subject = strSubject;            email.Body = strBody;            email.Encoding = System.Text.Encoding.UTF8;            bool isSuccess = email.SmtpClientSend(strTo);            return isSuccess;        }        public void ErrorLog(string strMessage) {            lock(this){                StreamWriter sw = new StreamWriter(config.LogFile + "MailLog.txt", true);                sw.WriteLine(strMessage);                sw.Flush();                sw.Close();            }        }    }}