using System;

using System.Collections.Generic;

using System.Text;

using System.Configuration;

using System.IO;

using System.Web;

using System.Net.Mail;

using System.Net;

using System.ComponentModel;

    public class GTMail

    {

        #region 发送电子邮件

        /// <summary>

        /// 发送电子邮件

        /// </summary>

        /// <param name="smtpserver">SMTP服务器</param>

        /// <param name="userName">登录帐号</param>

        /// <param name="pwd">登录密码</param>

        /// <param name="nickName">发件人昵称</param>

        /// <param name="strfrom">发件人</param>

        /// <param name="strto">收件人</param>

        /// <param name="subj">主题</param>

        /// <param name="bodys">内容</param>

        public static void sendMail(string smtpserver, string userName, string pwd, string nickName, string strfrom, string strto, string subj, string bodys)

        {

            SmtpClient _smtpClient = new SmtpClient();

            _smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式

            _smtpClient.Host = smtpserver;//指定SMTP服务器

            _smtpClient.Credentials = new System.Net.NetworkCredential(userName, pwd);//用户名和密码

            //MailMessage _mailMessage = new MailMessage(strfrom, strto);

            MailAddress _from = new MailAddress(strfrom, nickName);

            MailAddress _to = new MailAddress(strto);

            MailMessage _mailMessage = new MailMessage(_from, _to);

            _mailMessage.Subject = subj;//主题

            _mailMessage.Body = bodys;//内容

            _mailMessage.BodyEncoding = System.Text.Encoding.Default;//正文编码

            _mailMessage.IsBodyHtml = true;//设置为HTML格式

            _mailMessage.Priority = MailPriority.Normal;//优先级

            _smtpClient.Send(_mailMessage);

        }

        #endregion

        #region 简单电子邮件发送

        /// <summary>

        /// 简单电子邮件发送

        /// </summary>

        /// <param name="smtpserver">SMTP服务器</param>

        /// <param name="userName">登录帐号</param>

        /// <param name="pwd">登录密码</param>

        /// <param name="nickName">发件人昵称</param>

        /// <param name="mailFrom">发件人</param>

        /// <param name="mailTo">收件人</param>

        /// <param name="subj">主题</param>

        /// <param name="bodys">内容</param>

        public static void sendMail(string smtpserver, int smtpport, string userName, string pwd, string nickName, string mailFrom, string mailTo, string subj, string bodys)

        {

            SmtpClient _smtpClient = new SmtpClient();

            _smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式

            _smtpClient.Host = smtpserver;//指定SMTP服务器

            _smtpClient.Port = smtpport;

            _smtpClient.EnableSsl = true;

            //_smtpClient.SendCompleted += new SendCompletedEventHandler(Smtp_SendCompleted);

            _smtpClient.Credentials = new NetworkCredential(userName, pwd);//用户名和密码

            MailAddress _from = new MailAddress(mailFrom, nickName, Encoding.GetEncoding());

            MailAddress _to = new MailAddress(mailTo);

            MailMessage _mailMessage = new MailMessage(_from, _to);

            _mailMessage.Subject = subj;//主题

            _mailMessage.Body = bodys;//内容

            _mailMessage.BodyEncoding = Encoding.Default;//正文编码

            _mailMessage.IsBodyHtml = true;//设置为HTML格式

            _mailMessage.Priority = MailPriority.Normal;//优先级

            _smtpClient.Send(_mailMessage);

            //_smtpClient.SendMailAsync(_mailMessage);

        }

        private static void Smtp_SendCompleted(object sender, AsyncCompletedEventArgs e)

        {

            string msg = e.UserState.ToString();

            SmtpClient smtp = (SmtpClient)sender;

            if (e.Error == null)//问题出现后，这里的Error并没有错误

            {

                msg += ",1";//发送成功

            }

            else

            {

                msg += ",0";

                smtp.SendAsyncCancel();

            }

        }

        #endregion

        #region 邮件批量发送

        /// <summary>

        /// 邮件批量发送

        /// </summary>

        /// <param name="smtpserver"></param>

        /// <param name="smtpport"></param>

        /// <param name="userName"></param>

        /// <param name="pwd"></param>

        /// <param name="mailFrom"></param>

        /// <param name="nickName"></param>

        /// <param name="mailTo"></param>

        /// <param name="subj"></param>

        /// <param name="bodys"></param>

        /// <param name="cc"></param>

        /// <param name="bcc"></param>

        /// <param name="mailAttachments"></param>

        public static void SendMail(string smtpserver, int smtpport, string userName, string pwd, string mailFrom, string nickName, string[] mailTo, string subj, string bodys, string[] cc, string[] bcc, string[] mailAttachments)

        {

            SmtpClient smtp = new SmtpClient(); //实例化一个SmtpClient

            smtp.DeliveryMethod = SmtpDeliveryMethod.Network; //将smtp的出站方式设为 Network

            smtp.EnableSsl = false;//smtp服务器是否启用SSL加密

            smtp.Host = smtpserver; //指定 smtp 服务器地址

            smtp.Port = smtpport;             //指定 smtp 服务器的端口，默认是25，如果采用默认端口，可省去

                                              //如果你的SMTP服务器不需要身份认证，则使用下面的方式，不过，目前基本没有不需要认证的了

            smtp.UseDefaultCredentials = true;

            //smtp.SendCompleted += new SendCompletedEventHandler(Smtp_SendCompleted);

            //如果需要认证，则用下面的方式

            smtp.Credentials = new NetworkCredential(userName, pwd);

            MailMessage mm = new MailMessage(); //实例化一个邮件类

            mm.Priority = MailPriority.Normal; //邮件的优先级，分为 Low, Normal, High，通常用 Normal即可

            mm.From = new MailAddress(mailFrom, nickName, Encoding.GetEncoding());

            //收件方看到的邮件来源；

            //第一个参数是发信人邮件地址

            //第二参数是发信人显示的名称

            //第三个参数是 第二个参数所使用的编码，如果指定不正确，则对方收到后显示乱码

            //936是简体中文的codepage值

            //注：上面的邮件来源，一定要和你登录邮箱的帐号一致，否则会认证失败

            mm.ReplyToList.Add(mailFrom);

            //ReplyTo 表示对方回复邮件时默认的接收地址，即：你用一个邮箱发信，但却用另一个来收信

            if (cc.Length > )

            {

                mm.CC.Add(string.Join(",", cc));//抄送

            }

            if (bcc.Length > )

            {

                mm.Bcc.Add(string.Join(",", bcc));//密送

            }

            if (mailAttachments.Length > )

            {

                for (int i = ; i < mailAttachments.Length; i++)

                {

                    Attachment objMailAttachment = new Attachment(@mailAttachments[i]);//发送邮件的附件的地址

                    mm.Attachments.Add(objMailAttachment);//将附件附加到邮件消息对象中

                }

            }

            mm.To.Add(string.Join(",", mailTo));

            mm.Subject = subj; //邮件标题

            mm.SubjectEncoding = Encoding.GetEncoding();

            // 这里非常重要，如果你的邮件标题包含中文，这里一定要指定，否则对方收到的极有可能是乱码。

            // 936是简体中文的pagecode，如果是英文标题，这句可以忽略不用

            mm.IsBodyHtml = true; //邮件正文是否是HTML格式

            mm.BodyEncoding = Encoding.GetEncoding();

            //邮件正文的编码， 设置不正确， 接收者会收到乱码

            mm.Body = bodys;

            //邮件正文

            smtp.Send(mm);

            //smtp.SendMailAsync(mm); //发送邮件，如果不返回异常， 则大功告成了。

        }

        #endregion

    }