Json convert object which inherit dictionary

Question

I have following class definition:

public class ElasticObject : Dictionary
{
    public int Id { get;set;}
}

var keyValues = new Elast         


        

Answer 1

You can do this by making a custom JsonConverter class. Perhaps something like this:

class ElasticObjectConverter : JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return (objectType == typeof(ElasticObject));
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        ElasticObject eobj = (ElasticObject)value;
        var temp = new Dictionary(eobj);
        temp.Add("Id", eobj.Id);
        serializer.Serialize(writer, temp);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        var temp = serializer.Deserialize>(reader);
        ElasticObject eobj = new ElasticObject();
        foreach (string key in temp.Keys)
        {
            if (key == "Id")
                eobj.Id = Convert.ToInt32(temp[key]);
            else
                eobj.Add(key, temp[key]);
        }
        return eobj;
    }
}

You would then use it like this:

var settings = new JsonSerializerSettings
{
    NullValueHandling = NullValueHandling.Ignore,
    Converters = new List { new ElasticObjectConverter() }
};

var keyValues = new ElasticObject();
keyValues.Id = 200000;
keyValues.Add("Price", 12.5);

var json = JsonConvert.SerializeObject(keyValues, settings);

The JSON produced by the above would look like this:

{"Price":12.5,"Id":200000}

Is this what you are looking for?