WebAPI: Restrict Server Method to serialize JSON output only

Standard

It happens when you are working with .Net MVC or .NET WebAPI enviorment, that due to circular referencing, XML is returned by mvc/api controller instead of JSON.

In order to restrict it to JSON only use below steps

In the Global.asax file, put the following lines at the top of your Application_Start method:

GlobalConfiguration.Configuration.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
GlobalConfiguration.Configuration.Formatters.Remove(GlobalConfiguration.Configuration.Formatters.XmlFormatter);
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