How to get all the properties (not their value) in a json object?

I have a json object, a string, that contains some properties and their values. Say I never know what comes in my json object, how can I loop though it and get what properties it contains? For example:

{
"aaaa": 1,
"bbbb": "qwerty",
"ccc": 21.22
}

How do I collect aaa, bbb and ccc? Once again, I don’t want their values, I just want the name of the properties.

>Solution :

It’s as simple as this:

var json = @"{ ""aaaa"": 1, ""bbbb"": ""qwerty"", ""ccc"": 21.22 }";
var jobject = Newtonsoft.Json.Linq.JObject.Parse(json);
var names = jobject.Root.Cast<JProperty>().Select(x => x.Name).ToArray();

That gives:

aaaa
bbbb
ccc