Why has JSON.NET default DateTime serialization changed?

Question

I\'ve been using an old version of JSON.Net (4.0r4) for a while & have just updated to the latest one (4.5r11). I\'ve noticed that dates used to be formatted like:

Answer 1

If you have UTC data on server you should explicitly set DateTimeZoneHandling property

 //serializer fix
        config.Formatters.Clear();
        config.Formatters.Add(new JsonMediaTypeFormatter()
        {
            SerializerSettings = new JsonSerializerSettings() {
                ContractResolver=new CamelCasePropertyNamesContractResolver(),
                DateTimeZoneHandling = DateTimeZoneHandling.Utc},

        });

After this DateTime has "Z" at the end: 2017-05-11T00:35:20.8242381Z