Json数据时间格式的处理

方法：

 using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;//需引入Newtonsoft.Json.dll
 public class ConvertHelper
     {
         /// <summary>
         /// 将对象转成json格式并格式化日期：yyyy-MM-dd
         /// </summary>
         /// <param name="jsonObject"></param>
         /// <param name="dateType"></param>
         /// <returns></returns>
         public static string BuildJsonDateString(object jsonObject, string dateType = "yyyy-MM-dd")
         {
             var timeConverter = new IsoDateTimeConverter { DateTimeFormat = dateType };
             return JsonConvert.SerializeObject(jsonObject, Newtonsoft.Json.Formatting.Indented, timeConverter);
         }

         /// <summary>
         /// 将对象转成json格式并格式化时间：yyyy-MM-dd HH:mm:ss
         /// </summary>
         /// <param name="jsonObject"></param>
         /// <param name="dateType"></param>
         /// <returns></returns>
         public static string BuildJsonDateTimeString(object jsonObject, string dateType = "yyyy-MM-dd HH:mm:ss")
         {
             var timeConverter = new IsoDateTimeConverter { DateTimeFormat = dateType };
             return JsonConvert.SerializeObject(jsonObject, Newtonsoft.Json.Formatting.Indented, timeConverter);
         }
     }

调用：

 public string GetList()
         {
             News_BLL bll = new News_BLL();
             DataTable dt = bll.GetList("").Tables[];
             var list = Common.ConvertHelper<Model.News_Model.News_ITM>.ConvertToList(dt);
             return Common.ConvertHelper.BuildJsonDateTimeString(list);
         }