c# - linq を使用して JSON 文字列をオブジェクトに解析する

Question

私のアプリケーションでは、フォルダーとそれに含まれるブックマークを表示したいと考えています。私はこのようなことを達成しようとしています:

• フォルダ ウィキペディア
  • URL
  • URL b
  • URL ...
• フォルダ StackOverflow
  • URL
  • URL b

したがって、次の json 文字列を解析する必要があります。

{
       "checksum": "7d7205349eb64a4894aafc5ce074c0c0",
       "roots": {
          "bookmark_bar": {
             "children": [ {
                "children": [ {
                   "date_added": "13021579661026871",
                   "id": "28",
                   "name": "design patterns - Do you allow the Web Tier to access the DAL directly? - Stack Overflow",
                   "type": "url",
                   "url": "http://stackoverflow.com/questions/796656/do-you-allow-the-web-tier-to-access-the-dal-directly"
                }, {
                   "date_added": "13021665700468056",
                   "id": "31",
                   "name": "VS 2010 Error when creating or opening projects - Stack Overflow",
                   "type": "url",
                   "url": "http://stackoverflow.com/questions/8403853/vs-2010-error-when-creating-or-opening-projects"
                } ],
                "date_added": "13021579680308871",
                "date_modified": "13024947520078515",
                "id": "29",
                "name": "StackOverflow",
                "type": "folder"
             }, {
                "children": [ {
                   "date_added": "13022096980978880",
                   "id": "45",
                   "name": "Dependency injection - Wikipedia, the free encyclopedia",
                   "type": "url",
                   "url": "http://en.wikipedia.org/wiki/Dependency_injection"
                }, {
                   "date_added": "13024941326636844",
                   "id": "124",
                   "name": "Strategy pattern - Wikipedia, the free encyclopedia",
                   "type": "url",
                   "url": "http://en.wikipedia.org/wiki/Strategy_pattern"
                } ],
                "date_added": "13023315356559470",
                "date_modified": "13024946156966435",
                "id": "72",
                "name": "Wiki",
                "type": "folder"
             }, {
                "children": [ {
                   "date_added": "13023667785042757",
                   "id": "85",
                   "name": "Anemic Domain Model Illustrated | Frequent incoherent cogitation",
                   "type": "url",
                   "url": "http://vitamic.wordpress.com/2007/01/04/anemic-domain-model-illustrated/"
                } ],
                "date_added": "13023667668403520",
                "date_modified": "13023668043391377",
                "id": "82",
                "name": "#Read",
                "type": "folder"
             }, {
                "date_added": "13025102943539897",
                "id": "130",
                "name": "Modern UI for WPF - Home",
                "type": "url",
                "url": "http://mui.codeplex.com/wikipage?title=screenshots&referringTitle=Home"
             } ],
             "date_added": "13020681767991841",
             "date_modified": "13025102947408897",
             "id": "1",
             "name": "Lesezeichenleiste",
             "type": "folder"
          }
       },
       "version": 1
    }

次のように、GroupBy 関数を試してみましたが、成功しませんでした。

    var items = jObject.Descendants()
                     .Where(x => x.Type == JTokenType.Object &&
                                 x.Value<string>("type") != null)
                     .GroupBy(x => x.Value<string>("type"));

    foreach (var item in items)
    {
        Console.WriteLine(item.Key.ToString());
        foreach (var children in item)
        {
            Console.WriteLine("    " + children.Value<string>("name"));
        }
    }

結合関数も適用しようとしましたが、ここに結合プロパティがありません。誰かが私を正しい方向に向けることができますか?