Chuyển DataTable C# sang StringJson

• Json với Jquery
• Ajax Json

 string file = "sysalert";
        xml_Object xml_Obj = new xml_Object(file);

        DataTable dtData = xml_Data.getData_Url_file(file
           , xml_Obj.getValue_Str_dr("PathFileSave")
            , xml_Obj.getValue_Str_dr("AccessRight_File")
            ).Tables[0];

        dtData=DataTableHelper.Delete_Column(dtData, "", "Title,Link");

        Newtonsoft.Json.Converters.DataTableConverter JSONConvert = new Newtonsoft.Json.Converters.DataTableConverter();
        string fff=  Newtonsoft.Json.JsonConvert.SerializeObject(dtData);
        Response.Write(fff);