/// <param name="username">姓名</param>
        /// <returns>发送成功 返回 true 否则返回 false</returns>
        public bool GetEmail(string useremail, string username)
        {
            DateTime dt = DateTime.Now;
            string gettime = dt.ToLongDateString().ToString();
            string _MailAddress = "邮箱地址";
            string _MailNickName = "xxx";
            string _MailPassword = "邮箱密码";
            string _MailSmtpHost = "smtp.163.com";
            string _MailSmtpPort = "25";
            string _To = useremail;
            string _Title = "xxxxxx";
            string _Body = "亲爱的“" + username + "”用户:<br><br>您好！";
            string strXmlFile = HttpContext.Current.Server.MapPath("/config/mail.config");
            XmlControl XmlTool = new XmlControl(strXmlFile);
            XmlTool.Update("Root/Address", _MailAddress);
            XmlTool.Update("Root/NickName", _MailNickName);
            XmlTool.Update("Root/Password", _MailPassword);
            XmlTool.Update("Root/SmtpHost", _MailSmtpHost);
            XmlTool.Update("Root/SmtpPort", _MailSmtpPort);
            XmlTool.Update("Root/ToAddress", useremail);
            XmlTool.Update("Root/UserInfo", username);
            XmlTool.Save();
            XmlTool.Dispose();
            if (GmailHelp.GmailSendMail(username, _To, _Body, _Title, _MailAddress, _MailNickName, _MailPassword, _MailSmtpHost, int.Parse(_MailSmtpPort)))
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        #endregion

        #region   获取主机名称
        /// <summary>
        /// 获取主机名称    返回如  www.myWeb.com  or   www.myWeb.com:8080  注意没有 http://
        /// </summary>
        /// <returns></returns>
        public static string GetHttpHost()
        {
            int Port = HttpContext.Current.Request.Url.Port;
            if (Port == 80)
            {
                return HttpContext.Current.Request.Url.Host;
            }
            else
            {
                return HttpContext.Current.Request.Url.Host + ":" + Port;
            }

        }
        #endregion

/// <summary>
        /// 调用 GmailSendMail("收件姓名","收件人","邮件内容","邮件标题","发件人","发件人姓名","密码","smtp主机","端口")IsBodyHtml 表示所使用的邮件是HTML格式的, 还是Text  文本格式的 EnableSsl 是否启用 SSL 连接, GMail 是需要的, 163 就不需要了...
        /// </summary>
        /// <param name="MailTo"></param>
        /// <param name="StrBody"></param>
        /// <param name="strSubjec"></param>
        /// <param name="MailFrom"></param>
        /// <param name="MailFromName"></param>
        /// <param name="myPwd"></param>
        /// <param name="smtpHost"></param>
        /// <param name="smtpPort"></param>
        /// <returns></returns>
        public static bool GmailSendMail(string UserInfo, string MailTo, string StrBody, string strSubjec, string MailFrom, string MailFromName, string myPwd, string smtpHost, int smtpPort)
        {

            bool flag = true;
            string[] _mail = MailTo.Split(',');
            System.Net.Mail.MailMessage onemail = new System.Net.Mail.MailMessage(MailFrom, MailTo, strSubjec, StrBody);
            onemail.BodyEncoding = System.Text.Encoding.UTF8;
            onemail.IsBodyHtml = true;
            //onemail.From = new System.Net.Mail.MailAddress(MailFrom);
            onemail.From = new MailAddress(MailFrom, "xxx", System.Text.Encoding.UTF8);
            onemail.To.Add(new System.Net.Mail.MailAddress(MailTo));
            onemail.Subject = strSubjec;
            onemail.Body = StrBody;
            System.Net.Mail.SmtpClient clint = new System.Net.Mail.SmtpClient(smtpHost, smtpPort);//发送邮件的服务器
            clint.Credentials = new System.Net.NetworkCredential(MailFrom, myPwd);
            clint.EnableSsl = true;//Gmail 必须的
            clint.Timeout = 10000;//必须的
            try
            {
                clint.Send(onemail);//发送
                SaveSucLog(UserInfo, MailTo, MailFrom, MailFromName, smtpHost);//保存正确日志
                flag = true;
            }
            catch (Exception ex)
            {
                SaveErrLog(UserInfo, MailTo, MailFrom, MailFromName, smtpHost, ex.Message);//保存错误日志
                flag = false;
            }
            return flag;
        }
        /// <summary>
        /// 保存正确日志
        /// </summary>
        /// <param name="MailFrom"></param>
        /// <param name="MailFromName"></param>
        /// <param name="MailSmtpHost"></param>
        private static void SaveSucLog(string UserInfo, string MailTo, string MailFrom, string MailFromName, string MailSmtpHost)
        {
            System.IO.StreamWriter sw = new System.IO.StreamWriter(HttpContext.Current.Server.MapPath("/log/mailsuccess_" + DateTime.Now.ToString("yyyyMMdd") + ".txt"), true, System.Text.Encoding.UTF8);
            sw.WriteLine(System.DateTime.Now.ToString());
            sw.WriteLine("\t收信姓名：" + UserInfo);
            sw.WriteLine("\t收 信 人：" + MailTo);
            sw.WriteLine("\tSMTP服务器：" + MailSmtpHost);
            sw.WriteLine("\t发 信 人：" + MailFromName + "<" + MailFrom + ">");
            sw.WriteLine("---------------------------------------------------------------------------------------------------");
            sw.Close();
            sw.Dispose();
        }
        /// <summary>
        /// 保存错误日志
        /// </summary>
        /// <param name="MailFrom"></param>
        /// <param name="MailFromName"></param>
        /// <param name="MailSmtpHost"></param>
        /// <param name="ErrMsg"></param>
        private static void SaveErrLog(string UserInfo, string MailTo, string MailFrom, string MailFromName, string MailSmtpHost, string ErrMsg)
        {
            System.IO.StreamWriter sw = new System.IO.StreamWriter(HttpContext.Current.Server.MapPath("/log/mailerror_" + DateTime.Now.ToString("yyyyMMdd") + ".txt"), true, System.Text.Encoding.UTF8);
            sw.WriteLine(System.DateTime.Now.ToString());
            sw.WriteLine("\t收信姓名：" + UserInfo);
            sw.WriteLine("\t收 信 人：" + MailTo);
            sw.WriteLine("\tSMTP服务器：" + MailSmtpHost);
            sw.WriteLine("\t发 信 人：" + MailFromName + "<" + MailFrom + ">");
            sw.WriteLine("\t错误信息：\r\n" + ErrMsg);
            sw.WriteLine("---------------------------------------------------------------------------------------------------");
            sw.Close();
            sw.Dispose();
        }