C# 如何通过 JObject 进行枚举？
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How do I enumerate through a JObject?
提问by Geesu
I'm trying to determine how to access the data that is in my JObject and I can't for the life of me determine how to use it.
我正在尝试确定如何访问 JObject 中的数据，但我终生无法确定如何使用它。
JObject Object = (JObject)Response.Data["my_key"];
I can print it to the console doing Console.WriteLine(Object) and I see the data, it looks like:
我可以将它打印到控制台执行 Console.WriteLine(Object) 并且我看到数据，它看起来像：
{
"my_data" : "more of my string data"
...
}
But I have NO idea how to just iterate/enumerate through it, anyone have any ideas? I'm at such a loss right now.
但我不知道如何迭代/枚举它，有人有什么想法吗？我现在很失落。
采纳答案by svick
If you look at the documentation for JObject, you will see that it implements IEnumerable<KeyValuePair<string, JToken>>. So, you can iterate over it simply using a foreach:
如果您查看的文档JObject，您将看到它实现了IEnumerable<KeyValuePair<string, JToken>>. 因此，您可以简单地使用 a 对其进行迭代foreach：
foreach (var x in obj)
{
string name = x.Key;
JToken value = x.Value;
…
}
回答by jaxxbo
The answer did not work for me. I dont know how it got so many votes. Though it helped in pointing me in a direction.
答案对我不起作用。我不知道它是怎么得到这么多票的。虽然它帮助我指明了一个方向。
This is the answer that worked for me:
这是对我有用的答案：
foreach (var x in jobj)
{
var key = ((JProperty) (x)).Name;
var jvalue = ((JProperty)(x)).Value ;
}
回答by Daniel
JObjectscan be enumerated via JPropertyobjects by casting it to a JToken:
JObjects可以通过JProperty对象通过将其转换为JToken来枚举：
foreach (JProperty x in (JToken)obj) { // if 'obj' is a JObject
string name = x.Name;
JToken value = x.Value;
}
If you have a nested JObject inside of another JObject, you don't need to cast because the accessor will return a JToken:
如果在另一个 JObject 中有嵌套的 JObject，则不需要强制转换，因为访问器将返回 JToken：
foreach (JProperty x in obj["otherObject"]) { // Where 'obj' and 'obj["otherObject"]' are both JObjects
string name = x.Name;
JToken value = x.Value;
}
回答by dani herrera
For people like me, linq addicts, and based on svick's answer, here a linq approach:
对于像我这样的linq 瘾君子，根据 svick 的回答，这里有一个 linq 方法：
using System.Linq;
//...
//make it linq iterable.
var obj_linq = Response.Cast<KeyValuePair<string, JToken>>();
Now you can make linq expressions like:
现在您可以制作 linq 表达式，例如：
JToken x = obj_linq
.Where( d => d.Key == "my_key")
.Select(v => v)
.FirstOrDefault()
.Value;
string y = ((JValue)x).Value;
Or just:
要不就：
var y = obj_linq
.Where(d => d.Key == "my_key")
.Select(v => ((JValue)v.Value).Value)
.FirstOrDefault();
Or this one to iterate over all data:
或者这个迭代所有数据：
obj_linq.ToList().ForEach( x => { do stuff } );
