C# 使用linq将json字符串解析为对象

在我的应用程序中，我想显示一个文件夹及其包含的书签。我试图实现以下目标：

• 文件夹维基百科
  • 网址a
  • url b
  • url
• 文件夹堆栈溢出
  • 网址a
  • url b

因此，我必须解析以下json字符串：

{
       "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
    }

我尝试过GroupBy函数，但没有成功：

    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"));
        }
    }

var items=jObject.subjects（）
.Where（x=>x.Type==JTokenType.Object&&
x、 值（“类型”）！=null）
.GroupBy（x=>x.Value（“类型”）；
foreach（项目中的var项目）
{
Console.WriteLine（item.Key.ToString（））；
foreach（项中的变量子项）
{
Console.WriteLine（“+children.Value（“name”））；
}
}

---

我也尝试过应用Join函数，但这里缺少Join属性。有人能告诉我正确的方向吗？

我会用具体的类解析json

var root = JsonConvert.DeserializeObject<RootObj>(json);
Print(root.roots.bookmark_bar,"");

然后您的节点类将

public class Node
{
    public DateTime date_added { get; set; }
    public DateTime date_modified { get; set; }
    public string id { get; set; }
    public string name { get; set; }
    public string type { get; set; }
    public string url { get; set; }
    public List<Node> children { get; set; }
}

公共类节点
{
public DateTime date_添加了{get；set；}
public DateTime date_modified{get；set；}
公共字符串id{get；set；}
公共字符串名称{get；set；}
公共字符串类型{get；set；}
公共字符串url{get；set；}
公共列表子项{get；set；}
}

public class Node
{
    public string date_added { get; set; }
    public string date_modified { get; set; }
    public string id { get; set; }
    public string name { get; set; }
    public string type { get; set; }
    public string url { get; set; }
    public List<Node> children { get; set; }
}

public class Roots
{
    public Node bookmark_bar { get; set; }
}

public class RootObj
{
    public string checksum { get; set; }
    public Roots roots { get; set; }
    public int version { get; set; }
}

var root = JsonConvert.DeserializeObject<RootObj>(json, new DateTimeConverter());

class DateTimeConverter : JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return objectType == typeof(DateTime);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        return new DateTime(1970,1,1).Add(TimeSpan.FromTicks(long.Parse((string)reader.Value)));
    }

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

public class Node
{
    public DateTime date_added { get; set; }
    public DateTime date_modified { get; set; }
    public string id { get; set; }
    public string name { get; set; }
    public string type { get; set; }
    public string url { get; set; }
    public List<Node> children { get; set; }
}