public class BisController : Controller    {        //        // GET: /Bis/        protected string GetJson(object obj)        {            IsoDateTimeConverter dtConverter = new IsoDateTimeConverter { DateTimeFormat = "yyyy-MM-dd HH:mm:ss" };            //http://www.cnblogs.com/litian/p/3870975.html            return JsonConvert.SerializeObject(obj, dtConverter);        }        protected new JsonResult Json(object data)        {            return new HYJosnResult { Data = data };        }    }    //http://www.cnblogs.com/chongsha/archive/2013/04/14/3019990.html    public class HYJosnResult : JsonResult    {        public override void ExecuteResult(ControllerContext context)        {            if (context == null)            {                throw new ArgumentNullException("context");            }            if ((this.JsonRequestBehavior == JsonRequestBehavior.DenyGet) && string.Equals(context.HttpContext.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase))            {                throw new InvalidOperationException("");            }            HttpResponseBase response = context.HttpContext.Response;            if (!string.IsNullOrEmpty(this.ContentType))            {                response.ContentType = this.ContentType;            }            else            {                response.ContentType = "application/json";            }            if (this.ContentEncoding != null)            {                response.ContentEncoding = this.ContentEncoding;            }            if (this.Data != null)            {                IsoDateTimeConverter timeFormat = new IsoDateTimeConverter();                timeFormat.DateTimeFormat = "yyyy-MM-dd HH:mm:ss";                response.Write(JsonConvert.SerializeObject(this.Data, Newtonsoft.Json.Formatting.Indented, timeFormat));            }        }    }