SingleOrArrayConverter

SingleOrArrayConverter.cs

using System;
using System.Collections.Generic;

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace SomeNameSpace
{
    public class SingleOrArrayConverter<T> : JsonConverter
    {
        public override bool CanConvert(Type objectType)
        {
            return (objectType == typeof(List<T>));
        }

        public override object ReadJson(
            JsonReader reader,
            Type objectType,
            object existingValue,
            JsonSerializer serializer)
        {
            JToken token = JToken.Load(reader);
            return token.Type == JTokenType.Array ? token.ToObject<List<T>>() : new List<T> { token.ToObject<T>() };
        }

        public override bool CanWrite
        {
            get
            {
                return false;
            }
        }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            throw new NotImplementedException();
        }
    }
}