I have an issue with serialization for a WCF service (JSON output). I use dynamic object to return light JSON for my REST service.

This code return an empty result (impossible to serialize):

public DynamicJsonObject DoWork()

{

    dynamic result = new DynamicJsonObject();

    result.values = new List<int>() { 1, 2 };

}

but this code works perfectly

public DynamicJsonObject DoWork()

{

    dynamic result = new DynamicJsonObject();

    result.values = 1;

}

My DynamicJsonObject class is :

[Serializable]

public class DynamicJsonObject : DynamicObject, ISerializable

{

    private IDictionary<String, Object> Dictionary { get; set; }

    public DynamicJsonObject()

    {

        Dictionary = new Dictionary<String, Object>();

    }

    public DynamicJsonObject(SerializationInfo info, StreamingContext context)

    {

        Dictionary = new Dictionary<String, Object>();

    }

    public override bool TryGetMember(GetMemberBinder binder, out object result)

    {

        var hasKey = Dictionary.ContainsKey(binder.Name);

        result = hasKey ? Dictionary[binder.Name] : null;

        return hasKey;

    }

    public override bool TrySetMember(SetMemberBinder binder, object value)

    {

        Dictionary[binder.Name] = value;

        return true;

    }

    public void GetObjectData(SerializationInfo info, StreamingContext context)

    {

        foreach (String key in Dictionary.Keys)

        {

            info.AddValue(key.ToString(), Dictionary[key]);

        }

    }

}