How can I serialize/deserialize a dictionary with custom keys using Json.Net?

Question

I have the following class, that I use as a key in a dictionary:

    public class MyClass
    {
        private readonly string _property;

        public My         


        

Answer 1

Simpler, full solution, using a custom JsonConverter

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;

public class CustomDictionaryConverter : JsonConverter
{
    public override bool CanConvert(Type objectType) => objectType == typeof(Dictionary);

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        => serializer.Serialize(writer, ((Dictionary)value).ToList());

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        => serializer.Deserialize[]>(reader).ToDictionary(kv => kv.Key, kv => kv.Value);
}

Usage:

[JsonConverter(typeof(CustomDictionaryConverter))]
public Dictionary MyDictionary;