C# 获取JSON对象节点

我有一个json对象，我想得到以下值： 实体>介质>大小>大>高

{
  "created_at": "Sun, 01 Jan 2012 17:05:32 +0000",
  "entities": {
    "user_mentions": [
      {
        "screen_name": "nurdanterbiyik",
        "name": "nurdan",
        "id": 264782080,
        "id_str": "264782080",
        "indices": [
          0,
          15
        ]
      }
    ],
    "media": [
      {
        "id": 153522253777219584,
        "id_str": "153522253777219584",
        "indices": [
          44,
          64
        ],
        "media_url": "http://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "media_url_https": "https://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "url": "http://t.co/ZwHN9gvO",
        "display_url": "pic.twitter.com/ZwHN9gvO",
        "expanded_url": "http://twitter.com/emelkiraac/status/153522253773025280/photo/1",
        "type": "photo",
        "sizes": {
          "large": {
            "w": 536,
            "h": 800,
            "resize": "fit"
          },

有没有像XML->Xpath方法那样获得它的方法

{
  "created_at": "Sun, 01 Jan 2012 17:05:32 +0000",
  "entities": {
    "user_mentions": [
      {
        "screen_name": "nurdanterbiyik",
        "name": "nurdan",
        "id": 264782080,
        "id_str": "264782080",
        "indices": [
          0,
          15
        ]
      }
    ],
    "media": [
      {
        "id": 153522253777219584,
        "id_str": "153522253777219584",
        "indices": [
          44,
          64
        ],
        "media_url": "http://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "media_url_https": "https://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "url": "http://t.co/ZwHN9gvO",
        "display_url": "pic.twitter.com/ZwHN9gvO",
        "expanded_url": "http://twitter.com/emelkiraac/status/153522253773025280/photo/1",
        "type": "photo",
        "sizes": {
          "large": {
            "w": 536,
            "h": 800,
            "resize": "fit"
          },

这是额外的几行，与问题无关，只是因为

{
  "created_at": "Sun, 01 Jan 2012 17:05:32 +0000",
  "entities": {
    "user_mentions": [
      {
        "screen_name": "nurdanterbiyik",
        "name": "nurdan",
        "id": 264782080,
        "id_str": "264782080",
        "indices": [
          0,
          15
        ]
      }
    ],
    "media": [
      {
        "id": 153522253777219584,
        "id_str": "153522253777219584",
        "indices": [
          44,
          64
        ],
        "media_url": "http://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "media_url_https": "https://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "url": "http://t.co/ZwHN9gvO",
        "display_url": "pic.twitter.com/ZwHN9gvO",
        "expanded_url": "http://twitter.com/emelkiraac/status/153522253773025280/photo/1",
        "type": "photo",
        "sizes": {
          "large": {
            "w": 536,
            "h": 800,
            "resize": "fit"
          },

---

我更愿意将JSON单纯地看作是序列化对象——我想用它做的第一件也是最后一件事是将其反序列化到我随后使用的对象中

{
  "created_at": "Sun, 01 Jan 2012 17:05:32 +0000",
  "entities": {
    "user_mentions": [
      {
        "screen_name": "nurdanterbiyik",
        "name": "nurdan",
        "id": 264782080,
        "id_str": "264782080",
        "indices": [
          0,
          15
        ]
      }
    ],
    "media": [
      {
        "id": 153522253777219584,
        "id_str": "153522253777219584",
        "indices": [
          44,
          64
        ],
        "media_url": "http://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "media_url_https": "https://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "url": "http://t.co/ZwHN9gvO",
        "display_url": "pic.twitter.com/ZwHN9gvO",
        "expanded_url": "http://twitter.com/emelkiraac/status/153522253773025280/photo/1",
        "type": "photo",
        "sizes": {
          "large": {
            "w": 536,
            "h": 800,
            "resize": "fit"
          },

我不能告诉你用c#做这件事的最佳方法，但我用c#做这件事运气很好

{
  "created_at": "Sun, 01 Jan 2012 17:05:32 +0000",
  "entities": {
    "user_mentions": [
      {
        "screen_name": "nurdanterbiyik",
        "name": "nurdan",
        "id": 264782080,
        "id_str": "264782080",
        "indices": [
          0,
          15
        ]
      }
    ],
    "media": [
      {
        "id": 153522253777219584,
        "id_str": "153522253777219584",
        "indices": [
          44,
          64
        ],
        "media_url": "http://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "media_url_https": "https://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "url": "http://t.co/ZwHN9gvO",
        "display_url": "pic.twitter.com/ZwHN9gvO",
        "expanded_url": "http://twitter.com/emelkiraac/status/153522253773025280/photo/1",
        "type": "photo",
        "sizes": {
          "large": {
            "w": 536,
            "h": 800,
            "resize": "fit"
          },

JSON.NET还将允许您（引用网站）“LINQ to JSON适用于以下情况：您只对从JSON获取值感兴趣，没有要序列化或反序列化的类，或者JSON与您的类完全不同，您需要手动读取和写入对象。LINQtoJSON允许您在.NET中轻松读取、创建和修改JSON。“，这听起来像是你想做的。我从来没有尝试过，但如果您只想从长字符串中提取一段数据，那么这听起来是一个不错的选择。

使用它，您可以通过多种方式读取数据，而无需将JSON文本反序列化为对象。以下是一个简化的示例：

{
  "created_at": "Sun, 01 Jan 2012 17:05:32 +0000",
  "entities": {
    "user_mentions": [
      {
        "screen_name": "nurdanterbiyik",
        "name": "nurdan",
        "id": 264782080,
        "id_str": "264782080",
        "indices": [
          0,
          15
        ]
      }
    ],
    "media": [
      {
        "id": 153522253777219584,
        "id_str": "153522253777219584",
        "indices": [
          44,
          64
        ],
        "media_url": "http://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "media_url_https": "https://p.twimg.com/AiFrrSmCMAAdEID.jpg",
        "url": "http://t.co/ZwHN9gvO",
        "display_url": "pic.twitter.com/ZwHN9gvO",
        "expanded_url": "http://twitter.com/emelkiraac/status/153522253773025280/photo/1",
        "type": "photo",
        "sizes": {
          "large": {
            "w": 536,
            "h": 800,
            "resize": "fit"
          },

string json = @" {
""created_at"": ""Sun, 01 Jan 2012 17:05:32 +0000"",
  ""entities"": {
    ""media"": [{
      ""type"": ""photo"",
      ""sizes"": {
        ""large"": {
          ""w"": 536,
          ""h"": 800,
          ""resize"": ""fit""
        }
      }
    }]
  }
}
";

JObject o = JObject.Parse(json);
int h = (int)o["entities"]["media"][0]["sizes"]["large"]["h"];
int h2 = (int)o.SelectToken("entities.media[0].sizes.large.h");

---

使用JavascriptSerializer：可以传递字符串并返回对象。从那里，您可以访问返回对象的属性并获取h。如何检查o[“实体”][“介质”]是否存在？如果介质中有多个块，我如何查看介质。