Performance of JToken.FromObject vs default behavior in Json.net

Question

Following the sample here: http://james.newtonking.com/json/help/index.html?topic=html/CustomJsonConverter.htm

I am wondering how JToken.FromObject impacs performance when serialization.

Hoping someone have an asnwer and save me the time of profiling it after doing it.

I have a custom class where I would like to alter the values in the serialization and the sample seems to be a good case to do so. Just wondering if its using extra reflection to do so or JToken.FromObject also is used internally when serializing an object.

Yuval Itzchakov · Accepted Answer · 2014-07-21 10:59:01Z

2

The great thing about OSS is that you can actually see everything yourself:

From the JToken class

internal static JToken FromObjectInternal(object o, JsonSerializer jsonSerializer)
{
     ValidationUtils.ArgumentNotNull(o, "o");
     ValidationUtils.ArgumentNotNull(jsonSerializer, "jsonSerializer");

     JToken token;
     using (JTokenWriter jsonWriter = new JTokenWriter())
     {
         jsonSerializer.Serialize(jsonWriter, o);
         token = jsonWriter.Token;
     }

     return token;
}

There isn't any reflection overhead, just the extra allocation of JTokenWriter which is passed to JsonSerializer.

edited Jul 21, 2014 at 10:59

answered Jul 20, 2014 at 19:57

Yuval Itzchakov

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