/// 
        /// 获取客户端IP地址        /// 
        /// 
             public static string GetClientIP()        {            string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];            if (null == result || result == String.Empty)            {                result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];            }            if (null == result || result == String.Empty)            {                result = HttpContext.Current.Request.UserHostAddress;            }            return result;        }