如何从json对象获取密钥并转换为数组? [英] how to get the key from json object and convert into an array?
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问题描述
{
"Date": "2016-12-15",
"Data": {
"A": 4.4023,
"AB": 1.6403,
"ABC": 2.3457
}
}
我如何将我的钥匙A,Ab,ABC放入一个阵列中?只是键而不是值.
how can i get my keys A,Ab,ABC into an array? just the keys not value.
推荐答案
您可以安装 json.net 并使用 LINQ to JSON 来查询属性:
You could install json.net and use LINQ to JSON to query the properties:
var jsonString = @"{
""Date"": ""2016-12-15"",
""Data"": {
""A"": 4.4023,
""AB"": 1.6403,
""ABC"": 2.3457
}
}";
var root = JToken.Parse(jsonString);
var properties = root
// Select nested Data object
.SelectTokens("Data")
// Iterate through its children, return property names.
.SelectMany(t => t.Children().OfType<JProperty>().Select(p => p.Name))
.ToArray();
Console.WriteLine(String.Join(",", properties)); // Prints A,AB,ABC
示例小提琴.
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