public void Sel_ByIDLang(HttpContext context)
        {
            String jSonString = "";
            ExtendPropertiesBO aExtendPropertiesBO = new ExtendPropertiesBO();
            int IDLang = string.IsNullOrEmpty(context.Request.QueryString["IDLang"]) ? CORE_Language.sys_CUR_LANG : int.Parse(context.Request.QueryString["IDLang"]);

            List<ExtendProperties> obj = new List<ExtendProperties>();
            if (string.IsNullOrEmpty(context.Request.QueryString["Disable"]))
            {
                obj = aExtendPropertiesBO.Sel_ByIDLang(IDLang);
            }
            else
            {
                obj = aExtendPropertiesBO.Sel_ByIDLang(IDLang, bool.Parse(context.Request.QueryString["Disable"]));
            }

            int count = obj.Count;

            for (int i = 0; i < obj.Count; i++)
            {
                obj[i].Value = HttpUtility.HtmlDecode(obj[i].Value);
                // obj[i].Contents_Intro = HttpUtility.HtmlDecode(obj[i].Intro);
            }
            if (obj != null)
            {
                _converter.DateTimeFormat = "dd/MM/yyyy";
                jSonString = JsonConvert.SerializeObject(obj, _converter);
            }

            jSonString = "{\"data\":" + jSonString + "}";
            context.Response.Write(jSonString);
        }