/// <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();
        }