发邮件，多个附件

 /// <summary>
        ///  发送邮件，提供调用
        /// </summary>
        /// <param name="strSendToList">收件人,多个收件人用做好事隔开</param>
        /// <param name="strSubject">主题</param>
        /// <param name="strBody">内容</param>
        /// <param name="strAttachmentsPath">附件路径</param>
        /// <param name="strOutErr">错误信息</param>
        /// <returns></returns>
        public bool SendMail(string strSendToList, string strSubject, string strBody, string[] arrAttachmentsPath, out string strOutErr)
        {
            //发送邮件服务器
            string strHost = System.Configuration.ConfigurationManager.AppSettings["MailHost"].ToString();
            //发件人地址
            string strUserMail = System.Configuration.ConfigurationManager.AppSettings["MailSender"].ToString();
            //发件人密码
            string strUserPwd = System.Configuration.ConfigurationManager.AppSettings["MailSenderPwd"].ToString();           
            string ss = string.Empty;
            return SendMail(strHost, strUserMail, strUserPwd, strSendToList, strSubject, strBody, arrAttachmentsPath,out strOutErr);
       
        }

        /// <summary>
        /// 发邮件
        /// </summary>
        /// <param name="strMailService">邮箱服务器</param>
        /// <param name="strSendMail">发件人邮箱</param>
        /// <param name="strSendMailPwd">发件人密码</param>
        /// <param name="strToList">收件人,多个收件人用做好事隔开</param>
        /// <param name="strSubject">主题</param>
        /// <param name="strMessage">邮件内容</param>
        /// <param name="AttachFile">附件路径</param>
        public bool SendMail(string strMailService, string strSendMail, string strSendMailPwd, string strToList, string strSubject, string strMessage, string[] AttachFile, out string strOutErr)
        {
            System.Net.Mail.SmtpClient client = new SmtpClient(strMailService);
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential(strSendMail, strSendMailPwd);
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage(strSendMail, strToList);
            message.BodyEncoding = System.Text.Encoding.UTF8;
            message.Subject = strSubject;
            message.Body = strMessage;
            message.IsBodyHtml = true;
            //在有附件的情况下添加附件
            if (AttachFile != null && AttachFile.Length > 0)
            {
                foreach (string path in AttachFile)
                {
                    var attachFile = new Attachment(path);
                    message.Attachments.Add(attachFile);
                }
            }
            try
            {
                client.Send(message);
                strOutErr = string.Empty;
            }
            catch (Exception err)
            {
                strOutErr = err.Message;
                return false;
            }
            return true;
        }