JSON Media-Type Formatter in WEB API

JSON formatting is provided by the JsonMediaTypeFormatter class. By default, JsonMediaTypeFormatter uses the Json.Net library to perform serialization. Json.NET is a third-party open source project.

If you prefer, you can configure the JsonMediaTypeFormatter class to use the DataContractJsonSerializer instead of Json.NET. To do so, set the UseDataContractJsonSerializer property to true:

var json = GlobalConfiguration.Configuration.Formatters.JsonFormatter;

json.UseDataContractJsonSerializer = true;