Using Newtonsoft.Json with RestSharp v106.6

JsonNetRestSharp.cs

using Newtonsoft.Json;
using RestSharp;
using RestSharp.Serialization;

namespace JsonNetRestSharp
{
    class Program
    {
        static void Main(string[] args)
        {
            var client = new RestClient("https://my.api.com")
                .UseSerializer(new JsonNetSerializer());
        }

        public class JsonNetSerializer : IRestSerializer
        {
            public string Serialize(object obj) => 
                JsonConvert.SerializeObject(obj);

            public string Serialize(BodyParameter bodyParameter) => 
                JsonConvert.SerializeObject(bodyParameter.Value);

            public T Deserialize<T>(IRestResponse response) => 
                JsonConvert.DeserializeObject<T>(response.Content);

            public string[] SupportedContentTypes { get; } =
            {
                "application/json", "text/json", "text/x-json", "text/javascript", "*+json"
            };

            public string ContentType { get; set; } = "application/json";

            public DataFormat DataFormat { get; } = DataFormat.Json;
        }
    }
}

It should be:

    public class JsonNetSerializer : IRestSerializer
    {
        public string Serialize(object obj) => 
            JsonConvert.SerializeObject(obj);

        public string Serialize(Parameter parameter) => 
            JsonConvert.SerializeObject(parameter.Value);

        public T Deserialize<T>(IRestResponse response) => 
            JsonConvert.DeserializeObject<T>(response.Content);

        public string[] SupportedContentTypes { get; } =
        {
            "application/json", "text/json", "text/x-json", "text/javascript", "*+json"
        };

        public string ContentType { get; set; } = "application/json";

        public DataFormat DataFormat { get; } = DataFormat.Json;
    }

@greynoO I updated to 106.6.9 in order to get this to work. The suggested method .UseSerializer(new JsonNetSerializer()); is also marked as deprecated so I used this overload instead:
.UseSerializer(() => new JsonNetSerializer());

I had the same experience as @willchis on 106.6.10. Excited to see Newtonsoft make a comeback in 107.

Check the docs https://restsharp.dev/usage/serialization.html#newtonsoftjson-aka-json-net

@greynoO I updated to 106.6.9 in order to get this to work. The suggested method .UseSerializer(new JsonNetSerializer()); is also marked as deprecated so I used this overload instead:
.UseSerializer(() => new JsonNetSerializer());

@willchis it works like this

var request = new RestRequest();
request.JsonSerializer = new JsonNetSerializer();

Thanks! Using Newtonsoft.Json, deserization works even with DataMember annotated properties, whereas built-in deserializer seems to ignore those properties, always returning default value for associated type.

This is becoming so annoying!

Please update documentation that still reports full support for newtonsoft...

@ferradario the documentation is correct. Take your annoyance somewhere else.

@stevevg that is correct, SimpleJson uses the SerializeAs and DeserializeAs attributes.

So what is the final usage of Newtonsoft.Json in RestSharp?