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c#jsonserializationjson.net
Edwin
Edwin

Reputation: 555

IEnumerable serialize as [JsonObject] in Json.NET, without using the attribute

I want to serialize an IEnumerable as a JsonObject, like the way it gets serialized by applying the [JsonObject] attribute, but I cannot change the DTO classes by introducing this attribute.

Is there a way to tell the (de)serializer to force JsonObject (de)serialization?

Upvotes: 1

Views: 529

Answers (1)

Brian Rogers
Brian Rogers

Reputation: 129667

Yes, you can use a custom IContractResolver to do this. All you need to do is create a resolver class deriving from Json.Net's DefaultContractResolver and override the CreateContract(Type) method as shown below, where FooList is replaced with the type of your enumerable.

class CustomResolver : DefaultContractResolver
{
    protected override JsonContract CreateContract(Type type)
    {
        if (type == typeof(FooList))
            return CreateObjectContract(typeof(FooList));

        return base.CreateContract(type);
    }
}

Add the resolver to the serializer settings and use those settings when you serialize:

var settings = new JsonSerializerSettings
{
    ContractResolver = new CustomResolver(),
    Formatting = Formatting.Indented
};

string json = JsonConvert.SerializeObject(yourObject, settings);

Here is a demo: https://dotnetfiddle.net/ocyjU4

Upvotes: 4

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