//建立一個空的字元創
            string ip = string.Empty;
            if (HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)
                ip = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
            else
                ip = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();

            if (string.IsNullOrEmpty(ip) || !ValidateHelper.IsIP(ip))
                ip = "127.0.0.1";
            return ip;