var resultJson = new

            {

                records = rowCount,

                page = pageindex,

                //总页数=(总页数+页大小-1)/页大小

                total = (rowCount + pagesize - 1) / pagesize,//总页数

                rows = data.ToList<Web.Entity.Db.Table1Bean>(),

            };

            //JsonResult jr = Json(resultJson, "application/json", System.Text.Encoding.UTF8, JsonRequestBehavior.AllowGet);

            //Newtonsoft.Json 把对象转换成json字符串

            string json = Newtonsoft.Json.JsonConvert.SerializeObject(resultJson);