我可以 LINQ 一个 JSON 吗?
问题描述：
这是我从 .NET 上的请求中得到的 JSON:
This is the JSON I get from a request on .NET:
{
"id": "110355660738",
"picture": {
"data": {
"url": "https://fbcdn-profile-a.akamaihd.net/hprofile-ak-prn2/1027085_12033235063_5234302342947_n.jpg",
"is_silhouette": false
}
}
}
我想使用(也许?)LINQ来捕捉url"字段.我做了很多这样的请求，这有点不同.所以我不会每次都创建一个 C# 类并反序列化它.
and I'd like to catch the field "url", using (maybe?) LINQ. I do many request as this, that differents a bit. So I won't to create a C# Class and deserialize it every time.
是一种提取单个字段的方法吗?谢谢！
Is it a way to extract a single field? Thank you!
答
不需要 Linq，只需使用 dynamic(使用 Json.Net)
No need for Linq, just use dynamic (using Json.Net)
dynamic obj = JObject.Parse(json);
Console.WriteLine((string)obj.picture.data.url);
Linq 版本可读性不高
Linq version would not be much readable
JObject jObj = JObject.Parse(json);
var url = (string)jObj.Descendants()
.OfType<JProperty>()
.Where(p => p.Name == "url")
.First()
.Value;
文档:LINQ to JSON
Documentation: LINQ to JSON