Deserialize JSON array of arrays into List of Tuples using Newtonsoft

Question

I am receiving data that looks like this from an online service provider:

{
  name: \"test data\",
  data: [
    [ \"2017-05-31\", 2388.33 ],
    [ \"2017-04         


        

Answer 1

I took the generic TupleConverter from here: Json.NET deserialization of Tuple<...> inside another type doesn't work? And made a generic TupleListConverter.

Usage:

public class TestData
{
    public string Name;
    [Newtonsoft.Json.JsonConverter(typeof(TupleListConverter))]
    public List> Data;
}

public void Test(string json)
{
    var testData = JsonConvert.DeserializeObject(json);
    foreach (var tuple in testData.data)
    {
        var dateTime = tuple.Item1;
        var price = tuple.Item2;
        ... do something...
    }
}

Converter:

public class TupleListConverter : Newtonsoft.Json.JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return typeof(Tuple) == objectType;
    }

    public override object ReadJson(
        Newtonsoft.Json.JsonReader reader,
        Type objectType,
        object existingValue,
        Newtonsoft.Json.JsonSerializer serializer)
    {
        if (reader.TokenType == Newtonsoft.Json.JsonToken.Null)
            return null;

        var jArray = Newtonsoft.Json.Linq.JArray.Load(reader);
        var target = new List>();

        foreach (var childJArray in jArray.Children())
        {
            var tuple = new Tuple(
                childJArray[0].ToObject(),
                childJArray[1].ToObject()
            );
            target.Add(tuple);
        }

        return target;
    }

    public override void WriteJson(Newtonsoft.Json.JsonWriter writer, object value, Newtonsoft.Json.JsonSerializer serializer)
    {
        serializer.Serialize(writer, value);
    }
}