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Deserialize JSON using specific properties

I'm trying to deserialize JSON without declaring every property in C#. Here is a cut-down extract of the JSON:
{
"resourceType": "export",
"type": "search",
"total": 50,
"timestamp": "2020-08-02T18:26:06.747+00:00",
"entry": [
{
"url": "test.com/123",
"resource": {
"resourceType": "Slot",
"id": [
"123"
],
"schedule": {
"reference": {
"value": "testvalue"
}
},
"status": "free",
"start": "2020-08-03T08:30+01:00",
"end": "2020-08-03T09:00+01:00"
}
}
]
}
I want to get the values out of entry → resource, id and start.
Any suggestions on the best way to do this?

I've made very good experiences with json2sharp. You can enter your JSON data there and it will generate the classes you need to deserialize the JSON data for you.
public class Reference
{
public string value { get; set; }
}
public class Schedule
{
public Reference reference { get; set; }
}
public class Resource
{
public string resourceType { get; set; }
public List<string> id { get; set; }
public Schedule schedule { get; set; }
public string status { get; set; }
public string start { get; set; }
public string end { get; set; }
}
public class Entry
{
public string url { get; set; }
public Resource resource { get; set; }
}
public class Root
{
public string resourceType { get; set; }
public string type { get; set; }
public int total { get; set; }
public DateTime timestamp { get; set; }
public List<Entry> entry { get; set; }
}
The next step is to choose a framework which will help you to deserialize. Something like Newtonsoft JSON.
Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse);

If you want to get the data without declaring classes, you can use Json.Net's LINQ-to-JSON API (JToken, JObject, etc.). You can use the SelectToken method with a JsonPath expression to get what you are looking for in a couple of lines. Note that .. is the recursive descent operator.
JObject obj = JObject.Parse(json);
List<string> ids = obj.SelectToken("..resource.id").ToObject<List<string>>();
DateTimeOffset start = obj.SelectToken("..resource.start").ToObject<DateTimeOffset>();
Working demo here: https://dotnetfiddle.net/jhBzl4
If it turns out there are actually multiple entries and you want to get the id and start values for all of them, you can use a query like this:
JObject obj = JObject.Parse(json);
var items = obj["entry"]
.Children<JObject>()
.Select(o => new
{
ids = o.SelectToken("resource.id").ToObject<List<string>>(),
start = o.SelectToken("resource.start").ToObject<DateTimeOffset>()
})
.ToList();
Demo: https://dotnetfiddle.net/Qe8NB7

I am not sure why you don't deserialize the lot (even if it's minimally populated) since you have to do the inner classes anyway.
Here is how you could bypass some of the classes (1) by digging into the JObjects
Given
public class Reference
{
public string value { get; set; }
}
public class Schedule
{
public Reference reference { get; set; }
}
public class Resource
{
public string resourceType { get; set; }
public List<string> id { get; set; }
public Schedule schedule { get; set; }
public string status { get; set; }
public string start { get; set; }
public string end { get; set; }
}
public class Entry
{
public string url { get; set; }
public Resource resource { get; set; }
}
You could call
var results = JObject.Parse(input)["entry"]
.Select(x => x.ToObject<Entry>());

How to serialize and deserialize complex nested json Unity?

I have the following json
{
"android_play_store_link": "xyz",
"ios_app_store_link": "",
"sticker_packs": [
{
"identifier": "1",
"name": "abc",
"publisher": "Jane Doe",
"tray_image_file": "xyz.png",
"image_data_version":"1",
"avoid_cache":false,
"publisher_email":"",
"publisher_website": "",
"privacy_policy_website": "",
"license_agreement_website": "",
"stickers": [
{
"image_file": "abc.webp",
"emojis": ["☕","🙂"]
},
{
"image_file": "cdf.webp",
"emojis": ["😩","😰"]
},
{
"image_file": "efg.webp",
"emojis": ["☕","🙂"]
}
]
}
]
}
I have no acquaintance with json until now, How can i deserialize this ?
I know how to do the basic read and write code from persistent data path of unity. But how do i process this json ?
My main goal is as the player wins a level, a new key and value would be added to the "stickers" attribute, Also after some levels I want to add changes to the sticker packs attribute later.
Plus how will i modify the value of image data version in a specific sticker pack item ?
Thanks in advance

you can use Newtonsoft.Json library to deserialize and serialize. Find below the respective C# class.
public class Sticker
{
public string image_file { get; set; }
public IList<string> emojis { get; set; }
}
public class StickerPack
{
public string identifier { get; set; }
public string name { get; set; }
public string publisher { get; set; }
public string tray_image_file { get; set; }
public string image_data_version { get; set; }
public bool avoid_cache { get; set; }
public string publisher_email { get; set; }
public string publisher_website { get; set; }
public string privacy_policy_website { get; set; }
public string license_agreement_website { get; set; }
public IList<Sticker> stickers { get; set; }
}
public class Root
{
public string android_play_store_link { get; set; }
public string ios_app_store_link { get; set; }
public IList<StickerPack> sticker_packs { get; set; }
}
Code to Deserialize:
Root root = JsonConvert.DeserializeObject<Root>(json);

Cannot deserialize the JSON array (e.g. [1,2,3]) into type ' ' because type requires JSON object (e.g. {“name”:“value”})

I have JSON returning in the following format:
{
"Items": [
{
"unique_id": "11111111111",
"rages": {
"rage_content": "Hello rage 2",
"date_stamp": "21/07/2017",
"id": 2
}
},
{
"unique_id": "2222222222",
"rages": {
"rage_content": "Hello rage 1",
"date_stamp": "21/07/2017",
"id": 1
}
}
],
"Count": 2,
"ScannedCount": 2
}
And I have the following 2 classes defined:
Items.cs:
namespace ragevent_A0._0._1
{
class Items
{
public String rage_id { get; set; }
public rage rage { get; set; }
}
}
rage.cs:
class rage
{
public String rage_content { get; set; }
public String date_stamp { get; set; }
public int id { get; set; }
}
I am using the following code in order to attempt to deseralize the JSON returned above:
List<Items> data = JsonConvert.DeserializeObject<List<Items>>(json);
However, I am not able to successfully deserialize the data due to the above error. I have tried a few solutions online, however I have not managed to find a solution which works with the format of my returned JSON. I have used a JSON formatter and it is formatted correctly, so that shouldn't be the issue.
Any help would be much appreciated!

For the posted JSON data below should be the model you need (credit: http://json2csharp.com/). There is mismatch between the property name rage_id. You can use JsonProperty attribute
public class Rages
{
public string rage_content { get; set; }
public string date_stamp { get; set; }
public int id { get; set; }
}
public class Item
{
[JsonProperty(Name="rage_id")]
public string unique_id { get; set; }
public Rages rages { get; set; }
}
public class RootObject
{
public List<Item> Items { get; set; }
public int Count { get; set; }
public int ScannedCount { get; set; }
}
Your deserialization should be
var data = JsonConvert.DeserializeObject<RootObject>(json);

How to deserialize JSON with C#?

I have the simple JSON:
[
{
"new_as_cod": "0010955",
"as_nome": "NAME",
"as_cpf": "1212121212",
"as_email": "IM#UOL.COM.BR",
"as_cep": "88.025-200",
"igr_nome": "1\u00aa IGREJA BATISTA - FLORIANOPOLIS",
"id": "2781",
"valor": "50.00",
"pg_tipo_id": "CC",
"status": "Ativo",
"idstatus": "1"
}
]
... and a C# class generated from here:
public class RootObject
{
public string new_as_cod { get; set; }
public string as_nome { get; set; }
public string as_cpf { get; set; }
public string as_email { get; set; }
public string as_cep { get; set; }
public string igr_nome { get; set; }
public string id { get; set; }
public string valor { get; set; }
public string pg_tipo_id { get; set; }
public string status { get; set; }
public string idstatus { get; set; }
}
I have tried this:
RootObject data = JsonConvert.DeserializeObject<RootObject>(stringdate);
But I get the error:
How can I solve it?

[{ "new_as_cod": "0010955", "as_nome": "NAME", "as_cpf": "1212121212", "as_email": "IM#UOL.COM.BR", "as_cep": "88.025-200", "igr_nome": "1\u00aa IGREJA BATISTA - FLORIANOPOLIS", "id": "2781", "valor": "50.00", "pg_tipo_id": "CC", "status": "Ativo", "idstatus": "1" }]
If it has [] this is a collection.
Try this.
JsonConvert.DeserializeObject<List<RootObject>>(stringdate);

Yes, this JSON is a collection, so the variable needs to be list too.
List<RootObject> data = JsonConvert.DeserializeObject<List<RootObject>>(stringdate);

Deserializing a JSON file using C#

I'm creating a Steam APP ( For the Steam Platform ), and i need to deserialize a JSON file.
{
"response": {
"success": 1,
"current_time": 1401302092,
"raw_usd_value": 0.245,
"usd_currency": "metal",
"usd_currency_index": 5002,
"items": {
"A Brush with Death": {
"defindex": [
30186
],
"prices": {
"6": {
"Tradable": {
"Craftable": [
{
"currency": "metal",
"value": 4,
"last_update": 1398990171,
"difference": 0.17
}
]
}
}
}
},
...
I just need to get Defindex and value. Already deserialized some simple JSON files, but i think this one is more complex.
For those who wants to know, I am using the API from BackpackTF...

Use NewtonSoft.Json And then you can use it as follows to get the data out.
dynamic json = JsonConvert.DeserializeObject(<yourstring>);
string currency = json.response.usd_currency; // "metal"

In general, what you want to do is making sure you have valid JSON (use JSON LINT for that), then get a C# class definition with Json2CSharp, then you will do something like this:
MyClass myobject=JsonConvert.DeserializeObject<MyClass>(json);
(We're assuming MyClass is based on what you got from Json2CSharp)
Then you access the values you want via the traditional C# dot notation.

Use a nuget package caller Newtonsoft.Json.5.0.8. it is on the nuget repository.

This line of code will take your json as a string, and turn it into its root object.
RootObject obj = JsonConvert.DeserializeObject<RootObject>(jsonString);
The Json you provided is slightly flawed, but im guessing that the structure of c# objects you would be looking for would be close to this:
public class Craftable
{
public string currency { get; set; }
public int value { get; set; }
public int last_update { get; set; }
public double difference { get; set; }
}
public class Tradable
{
public List<Craftable> Craftable { get; set; }
}
public class Prices
{
public Tradable Tradable{ get; set; }
}
public class Items
{
public List<int> defindex { get; set; }
public Prices prices { get; set; }
}
public class Response
{
public int success { get; set; }
public int current_time { get; set; }
public double raw_usd_value { get; set; }
public string usd_currency { get; set; }
public int usd_currency_index { get; set; }
public Items items { get; set; }
}
public class RootObject
{
public Response response { get; set; }
}