telegram-bot/modules/ChatQuotes/Json/NullToEmptyObjectResolver.cs

using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;

namespace West.TelegramBot.ChatQuotes.Json
{
    class NullToEmptyObjectResolver : DefaultContractResolver
    {
        protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
        {
            return type.GetProperties()
                .Select(p => {
                    var jp = base.CreateProperty(p, memberSerialization);
                    jp.ValueProvider = new NullToEmptyStringValueProvider(p);
                    return jp;
                }).ToList();
        }
    }
}