发邮件代码

        /// <summary>
        /// 
        /// </summary>
        /// <param name="mailTo">收件人列表</param>
        /// <param name="mailFrom">发件人</param>
        /// <param name="mailCC">抄送人列表</param>
        /// <param name="mailBcc">密抄人列表</param>
        /// <param name="sAttachments">附件列表</param>
        /// <param name="mailSubject">标题</param>
        /// <param name="mailBody">内容</param>
        /// <param name="ishtml">是否支持HTML</param>
        public static void Send(string[] mailTo,string mailFrom, string[] mailCC,string[] mailBcc, string[] sAttachments, string mailSubject, string mailBody, bool ishtml) {
            if( mailTo == null ) throw new NotImplementedException("收件人不可为空");
            if( mailFrom == null ) throw new NotImplementedException( "发件人不可为空" );
            if( string.IsNullOrEmpty( mailSubject ) ) throw new NotImplementedException( "标题不可为空" );

            MailMessage message = new MailMessage();

            //收件人
            foreach( var item in mailTo ) {
                message.To.Add( new MailAddress( item ) );
            }

            //抄送列表
            foreach( var item in mailCC ) {
                message.CC.Add( new MailAddress( item ) );
            }

            //邮件附件
            foreach( var item in sAttachments ) {
                message.Attachments.Add( new Attachment( item ) );
            }
            
            //密抄人地址
            if( mailBcc != null ) {
                foreach( var item in mailBcc ) {
                    message.Bcc.Add( new MailAddress( item ) );
                }
            }

            //发送人地址
            message.From = new MailAddress( mailFrom ?? "hebkkun@163.com" );

            //邮件标题
            Encoding enc = Encoding.GetEncoding("GB2312");
            string subjectFormat = "=?{0}?B?{1}?=";
            message.Subject = String.Format(subjectFormat, enc.HeaderName,
                Convert.ToBase64String(enc.GetBytes(mailSubject), Base64FormattingOptions.None));

            message.IsBodyHtml = ishtml;

            //邮件正文
            message.Body = mailBody;
            message.BodyEncoding = Encoding.GetEncoding("GB2312");

            SmtpClient client = new SmtpClient(System.Configuration.ConfigurationManager.AppSettings.Get("mailServer"));
            
            //认证
            string sMailUser = System.Configuration.ConfigurationManager.AppSettings.Get("smtpUser");
            string sMailPass = System.Configuration.ConfigurationManager.AppSettings.Get("smtpPass");
            client.Credentials = new NetworkCredential(sMailUser, sMailPass);

            try {
                client.Send( message );
            } catch( SmtpException ex ) {
                throw ex;
            } finally {
                message.Attachments.Dispose();
            }

        }