c# - Json 嵌套参数

Question

我正在使用来自 Json 对象的数据来填充列表视图。该对象具有以下参数：

"id": "339150749455906", 
"posts": {
"data": [
{
"id": "339150749455906_545370565500589", 
"from": {
  "category": "Food/beverages", 
  "name": "Pepsi", 
  "id": "339150749455906"
}, 
"story": "Pepsi updated their cover photo.", 
"picture": "http://photos-g.ak.fbcdn.net/hphotos-ak-ash3/942740_545370555500590_46289134_s.jpg", 
"link": "http://www.facebook.com/photo.php?fbid=545370555500590&set=a.365573920146922.72816.339150749455906&type=1&relevant_count=1", 
"icon": "http://static.ak.fbcdn.net/rsrc.php/v2/yz/r/StEh3RhPvjk.gif", 
"actions": [
  {
    "name": "Comment", 
    "link": "http://www.facebook.com/339150749455906/posts/545370565500589"
  }, 
  {
    "name": "Like", 
    "link": "http://www.facebook.com/339150749455906/posts/545370565500589"
  }
], 

我想访问参数/键“操作”内的链接。到目前为止，我正在使用：

foreach (var post in postsTaskResult.posts.data)
{
   link = new Uri(string.Format("{0}", (string)post["link"])); 
}

但是，这只会带来“数据”中的链接。如何访问其他“链接”？

Answer 1

尝试这个。

var actionLinks = new List<string>();
var actions = post["actions"] as JArray; // if this works then all is well
foreach(var item in actions)
{
    actionLinks.Add((string)item["link"]);
}

我认为您也可以使用一些花哨的 Linq

var actionLinks = ((JArray)post["actions"])
         .Children<JObject>()
         .Select(a => (string)a["link"])
         .ToList();

非常未经测试。让我知道。