How to use Newtonsoft.Json as default in Asp.net Core Web Api?

Question

I am new to ASP.Net Web Api Core. I have been using ASP.Net MVC for past few years and I always have written an ActionFilter a

Answer 1

ASP.NET Core already uses JSON.NET as JavaScriptSerializer isn't implemented/ported to .NET Core.

Microsoft.AspNetCore.Mvc depends on Microsoft.AspNetCore.Formatter.Json which depends on Microsoft.AspNetCore.JsonPatch, which depends on Newtonsoft.Json (see source).

Update

This is only true for ASP.NET Core 1.0 to 2.2. ASP.NET Core 3.0 removes the dependency on JSON.NET and uses it's own JSON serializer.