List?? ??? ???? ??? ????? ?? Json.net ??

?? ?? ?? ??? ???? ??? List?? PagedResult?? ? ???? ???? ???. ?? ???? ?????. ??? JSON deserializer? ???? ??? ??????. ?? ????? [JsonObject] ? [JsonProperty] ??? ???? ??? ???? ?? ??? ??? ??????. ? ????? ??? ?? ??? ??? ?? ????? ??? ?????.

Json.Net? ????? IEnumerable? ???? ???? ??? ?????. [JsonObject] ???? ???? ???? ? ??? ???? ? ??? ?? ??? ????? ??? ????? ?? ??? ???. ?? ?? ??? ???? ??? GetEnumerator() ???? ?? ??? ???? ? ?? ?????.

? ??? ?? ????? @?? ??? ?? ?? ???? ?? ??? ??? ???? ? ??? ?? ? ????. Konrad ?? ??? ?? JsonConverter? ???? ?? ??? ??????. ??? ????.

PagedResult ?? ??? ?? ?????:

class PagedResult<T> : List<T>
{
    public int PageSize { get; set; }
    public int PageIndex { get; set; }
    public int TotalItems { get; set; }
    public int TotalPages { get; set; }
}

??? ?? ???? ??? ??? ??? ????.

class PagedResultConverter<T> : JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return (objectType == typeof(PagedResult<T>));
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        PagedResult<T> result = (PagedResult<T>)value;
        JObject jo = new JObject();
        jo.Add("PageSize", result.PageSize);
        jo.Add("PageIndex", result.PageIndex);
        jo.Add("TotalItems", result.TotalItems);
        jo.Add("TotalPages", result.TotalPages);
        jo.Add("Items", JArray.FromObject(result.ToArray(), serializer));
        jo.WriteTo(writer);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        JObject jo = JObject.Load(reader);
        PagedResult<T> result = new PagedResult<T>();
        result.PageSize = (int)jo["PageSize"];
        result.PageIndex = (int)jo["PageIndex"];
        result.TotalItems = (int)jo["TotalItems"];
        result.TotalPages = (int)jo["TotalPages"];
        result.AddRange(jo["Items"].ToObject<T[]>(serializer));
        return result;
    }
}

(? ?? ????? [JsonObject] ? [JsonProperty]? ???? ????. ???? ??? ??? ???? ??????.)

??? ???:

class Program
{
    static void Main(string[] args)
    {
        PagedResult<string> result = new PagedResult<string> { "foo", "bar", "baz" };
        result.PageIndex = 0;
        result.PageSize = 10;
        result.TotalItems = 3;
        result.TotalPages = 1;

        JsonSerializerSettings settings = new JsonSerializerSettings();
        settings.Converters.Add(new PagedResultConverter<string>());
        settings.Formatting = Formatting.Indented;

        string json = JsonConvert.SerializeObject(result, settings);
        Console.WriteLine(json);
    }
}

??:

{
  "PageSize": 10,
  "PageIndex": 0,
  "TotalItems": 3,
  "TotalPages": 1,
  "Items": [
    "foo",
    "bar",
    "baz"
  ]
}

? ??? Json.NET? ???? ?? ??? ?? ?? ?? ???? ????? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!