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Transform a JSON object to a JSON array, taking the first level of properties

I've this JSON object
{
"08f4f705-6e14-4781-8241-d04bf2dc6ada": {
"description": "xxxxxxxx",
"note": "yyyyyyyy"
},
"05f4f995-6e14-4567-8241-d04bf2d456ee": {
"description": "aaaaaa",
"note": "bbb"
},
"0675f995-6e14-4567-8241-d4567f2d456z": {
"description": "fffff",
"note": "gggg"
}
}
I need to convert into a JSON array like this:
(the elements should be the content of the first level properties)
[
{
"description": "xxxxxxxx",
"note": "yyyyyyyy"
},
{
"description": "aaaaaa",
"note": "bbb"
},
{
"description": "fffff",
"note": "gggg"
}
]
I can't manipulate the object and I didn't find an appropriate resource to follow. How can I do it?

You can achieve this by deserializing your json string into Dictionary<string, object>:
var obj = JsonConvert.DeserializeObject<Dictionary<string, object>>(json);
After that you extract the values and serialize them back to json:
var newJson = JsonConvert.SerializeObject(obj.Values);

access value in JSONArray C# UWP

I want to extract the first value in a JSONArray as String. Somehow I have the wrong approach, I get an exception.
How can I improve this?
I think I reach the array fine via myJasonObject["entities"].toArray(), but when I try to do something like getString()["entity"] afterwards, it's marked as error by VS.
I want to be able to store "dax" (the value of "entity"):
Response{
"query": "what about dax",
"topScoringIntent": {
"intent": "StockPrice2",
"score": 0.3969668
},
"intents": [
{
"intent": "StockPrice2",
"score": 0.3969668
},
{
"intent": "None",
"score": 0.372112036
},
],
"entities": [
{
"entity": "dax",
"type": "StockSymbol"
}
]
}

You can get "dax" using following:
JObject obj = JObject.Parse(json);
JArray entities = obj.GetValue("entities") as JArray;
var firstEntity = entities.FirstOrDefault() as JObject;
var entityPropertyValue = entity.GetValue("entity");
var daxString = entityPropertyValue.ToString();

Accesing child value in JSON

How can i acces the first item id?
using (var http = new HttpClient())
{
var res = JArray.Parse(await http.GetStringAsync("http://api.champion.gg/champion/Gragas?api_key=????").ConfigureAwait(false));
^^^^^^ // Also tried with JObject instead of JArray, both don't work
var champion = (Uri.EscapeUriString(res[0]["items"][0]["mostGames"][0]["items"][0]["id"].ToString()));
Console.WriteLine(champion); // ^ [0] here because the JSON starts with an [
}
Example JSON result (made it smaller because the original JSON is over 21500 characters, made sure its valid with https://jsonlint.com, here is the original JSON response: https://hastebin.com/sacikozano.json)
[{
"key": "Gragas",
"role": "Jungle",
"overallPosition": {
"change": 1,
"position": 13
},
"items": {
"mostGames": {
"items": [{
"id": 1402,
"name": "Enchantment: Runic Echoes"
},
{
"id": 3158,
"name": "Ionian Boots of Lucidity"
},
{
"id": 3025,
"name": "Iceborn Gauntlet"
},
{
"id": 3065,
"name": "Spirit Visage"
},
{
"id": 3742,
"name": "Dead Man's Plate"
},
{
"id": 3026,
"name": "Guardian Angel"
}
],
"winPercent": 50.45,
"games": 300
}
}
}]
With JArray i get the following error: Accessed JObject values with invalid key value: 0. Object property name expected.
With JObject i get the following error: Error reading JObject from JsonReader. Current JsonReader item is not an object: StartArray. Path '', line 1, position 1.
Thanks in advance, i hope i explained it well

It should be:
var champion = (Uri.EscapeUriString(res[0]["items"]["mostGames"]["items"][0]["id"].ToString()));
The outermost "items" property has a single object as its value, not an array, so [0] is not needed in ["items"][0]. Similarly "mostGames" has a single object value so the [0] is not needed in ["mostGames"][0].
Sample fiddle.
Note that if "items" is sometimes an array of objects, but sometimes is a single object instead of an array of one object, you can introduce the following extension method:
public static class JsonExtensions
{
public static IEnumerable<JToken> AsArray(this JToken item)
{
if (item is JArray)
return (JArray)item;
return new[] { item };
}
}
And do:
var champion = (Uri.EscapeUriString(res[0]["items"].AsArray().First()["mostGames"]["items"][0]["id"].ToString()));

Extract first set of records in JSON C#

I have a requirement to get the first set of records in c# JSON. Here is my JSON data for example
string sJSON = "{
{
"ID": "1",
"Name":"John",
"Area": "Java" ,
"ID": "2",
"Name": "Matt",
"Area": "Oracle" ,
"ID": "3","Name":
"Danny","Area": "Android"
}
}"
I need to extract only the 1st set of records (i.e. {{"ID": "1", "Name":"John", "Area": "Java"}}).
If there is only one record my code (see below) works fine but when there are multiple records it takes the last set of JSON data (i.e. {{"ID": "3","Name": "Danny","Area": "Android"}}).
JObject jsonObject = JObject.Parse(sJSON);
string sID = (string)jsonObject["ID"];
string sName = (string)jsonObject["Name"];
string sArea = (string)jsonObject["Area"];
Can anyone help me extract only the 1st set of JSON data?

You return the JSON data as JSON Array, now it is a simple JSON string.
If you're able to generate like below then you can easily get the single JSON element easily.
[{ "ID": "1", "Name":"John", "Area": "Java" },{ "ID": "2","Name": "Matt","Area": "Oracle" },{ "ID": "3","Name": "Danny","Area": "Android" } ]
Use the below link, to understand this JSON format.
http://json.parser.online.fr/

Parse the data as JToken.
Such that you have something like:
var jToken = JToken.Parse(sJSON);
var isEnumerable = jToken.IsEnumerable()
if(isEnumeable)
{
cast as JArray and get firstOrdefault
}
var isObject = jToken.IsObject();
if(isObject )
{
cast as JObject and perform straight casting
}

JSON nested array

Lets say i have the following JSON
{
"data": [
{
"from": {
"name": "aaa bbb",
},
"actions": [
{
"name": "Comment",
"link": "http://...
},
{
"name": "Like",
"link": "http://.."
}
],
},
And i have
JSONObject wallData = helper.Get("/me/feed");
if (wallData != null)
{
var data = wallData.Dictionary["data"];
List<JSONObject> wallPosts = data.Array.ToList<JSONObject>();
}
foreach (Facebook.JSONObject wallItem in wallPosts)
{ ... }
Which stores me whole feed into wallData and 'data' object into wallPosts.
So then i can access the wallItem.Dictionary["from"].Dictionary["name"], and i get "aaa bbb".
But i can't get inside the actions array
The wallItem.Dictionary["actions"].Dictionary["name"] doesn't work.
Any idea

You need to do something like wallItem.Dictionary["actions"][0].Dictionary["name"] because "actions" is an array.

On a different note...its neater if u directly into a class...like this
var jSerializer = new JavaScriptSerializer();
var jsonObject = jSerializer.Deserialize<DataObject>(json);
The DataObject will be a class which emulates ur JSON data in a strongly typed class. Depending on the size of ur Json you will not have to use a lot of strings in your code.