Develop Reference

Deserialize Json (received from Socket.io Response) in unity

I get the data from the web server as json, but I can't deserialize them and access the keys (eg first_name)
The information is received in the client, but Unfortunately, this code does not print anything in the Unity console
my code :
socket.On("UserList", response =>
{
var result = JsonConvert.DeserializeObject<List<UserClass>>(response.ToString());
var first_name = result[0].first_name;
print(first_name);
});
UserClass :
public class UserClass
{
public string _id { get; set; }
public string first_name { get; set; }
public string last_name { get; set; }
public string mobile { get; set; }
public string email { get; set; }
public DateTime createdAt { get; set; }
public DateTime updateAt { get; set; }
public int __v { get; set; }
}
Json that is received in the client :
[
{
"_id": "83ca7d56cbc2b281wd4ee658",
"first_name": "sara",
"last_name": "Paulson",
"mobile": "09323456789",
"email": "sara#gmail.com",
"createdAt": "2023-01-20T12:46:38.384Z",
"updateAt": "2023-01-20T12:46:38.384Z",
"__v": 0
},
{
"_id": "59e41dku510239e83ed7e10m",
"first_name": "Evan",
"last_name": "Peters",
"mobile": "09327931248",
"email": "Evan#gmail.com",
"createdAt": "2023-02-10T10:35:26.687Z",
"updateAt": "2023-02-10T10:35:26.687Z",
"__v": 0
},
{
"_id": "64lm96c57a8a4f289fw0gg66",
"first_name": "Emma",
"last_name": "Roberts",
"mobile": "09325354769",
"email": "Emma#gmail.com",
"createdAt": "2023-01-20T13:11:46.402Z",
"updateAt": "2023-01-20T13:11:46.402Z",
"__v": 0
}
]
How can I access keys of this Json in Unity?

I checked and found that even specifying arrays in JSON works somehow:
using System;
using System.Collections.Generic;
using Newtonsoft.Json;
class UserClass
{
public string _id { get; set; }
public string first_name { get; set; }
public string last_name { get; set; }
public string mobile { get; set; }
public string email { get; set; }
public DateTime createdAt { get; set; }
public DateTime updateAt { get; set; }
public int __v { get; set; }
}
class UserList
{
public List<UserClass> objs;
}
public class Program
{
public static void Main(string[] args)
{
string response = "{'objs': [{'_id': 1, 'first_name': 'abc'}, {'_id': 2, 'first_name': 'def'}]}";
var result = JsonConvert.DeserializeObject<UserList>(response);
if (result != null)
{
foreach (UserClass u in result.objs)
{
Console.Write(u._id + ',');
Console.WriteLine(u.first_name);
}
}
string response2 = "[{'_id': 1, 'first_name': 'abc'}, {'_id': 2, 'first_name': 'def'}]";
var result2 = JsonConvert.DeserializeObject<List<UserClass>>(response2);
if (result2 != null)
{
for (var i = 0; i < result2.Count; i++)
{
Console.Write(result2[i]._id + ',');
Console.WriteLine(result2[i].first_name);
}
}
}
}
Both ways give same output. https://dotnetfiddle.net/g2Dn1n
The only additional thing I did was to check for returned value. You should use Debug.Log() in Unity to print actual values obtained after deserialization.

Deserialize JSON in xamarin

How can i deserialize a local json file to an object?
I'm trying to deserialize a local json file in xamarin but it just doesn't work i read many guides and watched some tutorials but none of them helped and most of them give the same code i'm using right now
My code:
public test()
{
InitializeComponent();
List<Rootobject> ob = new List<Rootobject>();
var assembly = IntrospectionExtensions.GetTypeInfo(typeof(test)).Assembly;
Stream stream = assembly.GetManifestResourceStream($"TunisiaPrayer.states.json");
string text = "";
using (var reader = new StreamReader(stream))
{
text = reader.ReadToEnd();
}
ob = JsonConvert.DeserializeObject<List<Rootobject>>(text);
//printing the json file to make sure it read it fully
//i get no error here
DisplayJson.Text = text;
//try catch to test if it was deserialized or not
try
{
//printing a property of ob in a label element to see if it works
DisplayData.Text = ob[2].Property1.data.gouvernorat.intituleAn;
}
catch (Exception ex)
{
DisplayData.Text = ex.Message;
}
}
RootObject Class:
namespace TunisiaPrayer.Models
{
public class Rootobject
{
public Class1 Property1 { get; set; }
}
public class Class1
{
public Data data { get; set; }
}
public class Data
{
public Gouvernorat gouvernorat { get; set; }
public Delegation[] delegation { get; set; }
}
public class Gouvernorat
{
public int id { get; set; }
public string intituleAr { get; set; }
public string intituleAn { get; set; }
}
public class Delegation
{
public int id { get; set; }
public string intituleAr { get; set; }
public string intituleAn { get; set; }
}
}
sample of states.json:
[{
"data": {
"gouvernorat": {
"id": 358,
"intituleAr": "اريانة",
"intituleAn": "Ariana"
},
"delegation": [{
"id": 631,
"intituleAr": "اريانة",
"intituleAn": "Ariana"
},
{
"id": 534,
"intituleAr": "التظامن",
"intituleAn": "Attadhamon"
},
{
"id": 532,
"intituleAr": "سكرة",
"intituleAn": "Soukra"
}
]
}
},
{
"data": {
"gouvernorat": {
"id": 362,
"intituleAr": "القصرين",
"intituleAn": "Kasserine"
},
"delegation": [{
"id": 579,
"intituleAr": "العيون",
"intituleAn": "El Ayoun"
},
{
"id": 576,
"intituleAr": "سبيبة",
"intituleAn": "Sbiba"
},
{
"id": 575,
"intituleAr": "سبيطلة",
"intituleAn": "Sbitla"
},
{
"id": 573,
"intituleAr": "تالة",
"intituleAn": "Tala"
}
]
}
}]
error: Object reference not set to an instance of an object
note that when i print ob.Count it gives me the correct length of the list but i can't access any data in it

you have to use Root[] , not just root, try this
var obj =JsonConvert.DeserializeObject< List<Root>>(text);
test
var displayData = obj[1].data.gouvernorat.intituleAn; // = Kasserine
classes
public class Root
{
public Data data { get; set; }
}
public class Data
{
public Gouvernorat gouvernorat { get; set; }
public List<Delegation> delegation { get; set; }
}
public class Gouvernorat
{
public int id { get; set; }
public string intituleAr { get; set; }
public string intituleAn { get; set; }
}
public class Delegation
{
public int id { get; set; }
public string intituleAr { get; set; }
public string intituleAn { get; set; }
}

Blazor Json to class conversion failure

I have built a service that is retrieving a sample file.
return await _httpClient.GetFromJsonAsync<BitcoinDetails>("https://localhost:44356/sample-data/jsonresult.json");
Example
"id": 1,
"name": "Bitcoin",
"symbol": "BTC",
"slug": "bitcoin",
"num_market_pairs": 9550,
"date_added": "2013-04-28T00:00:00.000Z",
"tags": [
"mineable",
"pow",
"sha-256",
"store-of-value",
"state-channels"
],
"max_supply": 21000000, -- or null if not set
"circulating_supply": 18555956,
"total_supply": 18555956,
"platform": null,
"cmc_rank": 1,
"last_updated": "2020-11-27T21:22:02.000Z",
"quote": {
"USD": {
"price": 17069.598651577406,
"volume_24h": 38571181876.87967,
"percent_change_1h": 1.46329039,
"percent_change_24h": 0.92405679,
"percent_change_7d": -8.25816318,
"market_cap": 316742721516.32965,
"last_updated": "2020-11-27T21:22:02.000Z"
}
}
}
Now I have a class that has the following properties
public class Datum
{
public int id { get; set; }
public string name { get; set; }
public string symbol { get; set; }
public string slug { get; set; }
public int num_market_pairs { get; set; }
public DateTime date_added { get; set; }
public List<string> tags { get; set; }
public long? max_supply { get; set; }
public double circulating_supply { get; set; }
public double total_supply { get; set; }
public Platform platform { get; set; }
public int cmc_rank { get; set; }
public DateTime last_updated { get; set; }
public Quote quote { get; set; }
}
Keeping in mind that there are many more records I am getting the following error
Unhandled exception rendering component: The JSON value could not be converted to System.Nullable`1[System.Int64]. Path: $.data[80].max_supply |

make dto nullable and then try as follows:
var response = client.GetAsync(apiUrl);
if (response.Result.IsSuccessStatusCode)
{
var data = response.Result.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject<Datum>(data.Result);
return result;
}

I ended up using a proxy call however this code did work:
var response = await _httpClient.GetAsync("https://localhost:5001/proxy");
if (response.IsSuccessStatusCode)
{
var data = await response.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject<BitcoinDetails>(data);
return result;
}
else
{
throw new Exception("Failed to get data");
}
and added this to the class property
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]

JSON object throws up null response but it isn't null

Tried to parse JSON object using JavaScriptSerializer().Deserialize but getting thrown a null error at foreach (var item in getRoute.results) where Route getRoute = new JavaScriptSerializer().Deserialize<Route>(strresulttest);
The thing is, when I debugged strresulttest by printing out its contents, I was able to see my expected JSON output as shown here https://codeshare.io/5vM6X4
Code to parse JSON:
public class Route
{
public List<GetRoute> results { get; set; }
}
public class GetRoute
{
public string status_message { get; set; }
public string viaRoute { get; set; }
public string subtitle { get; set; }
public int totalTime { get; set; }
public int totalDistance { get; set; }
}
private void GetInstructions()
{
//GET METHOD for route query
string strurltest = String.Format("https://developers.onemap.sg/privateapi/routingsvc/route?start="+
startLat+","+ startLon +"&end="+ destinationLat +","+ destinationLon+"&"+
"routeType="+ transportType + "&token="+token);
WebRequest requestObjGet = WebRequest.Create(strurltest);
requestObjGet.Method = "GET";
HttpWebResponse responseObjGet = null;
responseObjGet = (HttpWebResponse)requestObjGet.GetResponse();
string strresulttest = null;
using (Stream stream = responseObjGet.GetResponseStream())
{
StreamReader sr = new StreamReader(stream);
strresulttest = sr.ReadToEnd();
//reminder: remove after prod. GET is working.
System.Diagnostics.Debug.WriteLine(strresulttest);
sr.Close();
}
//display search recommendations
Route getRoute = new JavaScriptSerializer().Deserialize<Route>(strresulttest);
foreach (var item in getRoute.results)
{
//reminder: remove after prod.
System.Diagnostics.Debug.WriteLine("Route via: " + item.viaRoute + "\n");
System.Diagnostics.Debug.WriteLine("Description: " + item.subtitle + "\n");
}
}
Expected JSON output (shown when System.Diagnostics.Debug.WriteLine(strresulttest);):
{
"status_message": "Found route between points",
"route_geometry": "m{`G_cyxRaAmALMtAyAj#g#RIZG|#KTC??RCxBQ\\KAOa#sDAQWwBM_AUmBEa#Ky#_#kDKoAIgAAs#Ce#?M|#_#PINUFk#Ik#e#aCu#wBeBoD_A}AmBqC{#iA_AeAyAqA{LmKmAu#k#g#y#Jk#r#k#r#GP#PFJhAt#oEnGw#i#QTMPs#g#}AzBr#d#JQ",
"status": 0,
"route_instructions": [
[
"Head",
"SINARAN DRIVE",
56,
"1.320394,103.844478",
18,
"56m",
"North East",
"North",
"driving",
"Head Northeast On Sinaran Drive"
],
[
...
],
...
],
"route_name": [
"MOULMEIN ROAD",
"WHAMPOA ROAD"
],
"route_summary": {
"start_point": "SINARAN DRIVE",
"end_point": "WHAMPOA ROAD",
"total_time": 390,
"total_distance": 2675
},
"viaRoute": "JALAN BAHAGIA",
"subtitle": "Fastest route, assuming usual traffic",
"phyroute": {
"status_message": "Found route between points",
"route_geometry": "m{`G_cyxRaAmALMtAyAj#g#RIZG|#KTC??Ao#BcB?kCBIHK|Ay#M_AUmBEa#Ky#_#kDKoAIgAAs#Ce#?M?OBw#BsCEq#Q{#Qm#KQGMaCNM#iFXO?sCNo#LCa#QaICe#EI?EBQTi#Ha##c#CMGWOYOOgEgD{BeBuB}AoEnGw#i#QTMPs#g#}AzBr#d#JQ",
"status": 0,
"route_instructions": [
[
"Head",
"SINARAN DRIVE",
56,
"1.320394,103.844478",
18,
"56m",
"North East",
"North",
"driving",
"Head Northeast On Sinaran Drive"
],
[
...
],
...
],
"route_name": [
...
],
"route_summary": {
...
},
"viaRoute": "BALESTIER ROAD",
"subtitle": "Shortest distance"
}
}

You are getting a null in results because the class structure that you are deserializing into does not match your JSON. The JSON you linked in your question corresponds to this class structure instead:
public class Route
{
public string status_message { get; set; }
public string route_geometry { get; set; }
public int status { get; set; }
public List<List<object>> route_instructions { get; set; }
public List<string> route_name { get; set; }
public RouteSummary route_summary { get; set; }
public string viaRoute { get; set; }
public string subtitle { get; set; }
public Phyroute phyroute { get; set; }
}
public class RouteSummary
{
public string start_point { get; set; }
public string end_point { get; set; }
public int total_time { get; set; }
public int total_distance { get; set; }
}
public class Phyroute
{
public string status_message { get; set; }
public string route_geometry { get; set; }
public int status { get; set; }
public List<List<object>> route_instructions { get; set; }
public List<string> route_name { get; set; }
public RouteSummary route_summary { get; set; }
public string viaRoute { get; set; }
public string subtitle { get; set; }
}
You can deserialize and get the viaRoute and subtitle like this:
Route route = new JavaScriptSerializer().Deserialize<Route>(strresulttest);
System.Diagnostics.Debug.WriteLine("Route via: " + route.viaRoute);
System.Diagnostics.Debug.WriteLine("Description: " + route.subtitle);

Deserialization Json to C# using Newtonsoft

I have the following JSON that I need to parse :
{
"code": 200,
"status": "OK",
"response": {
"course_accessJSON": null,
"in_progress": 1,
"completed": 0,
"passed": 0,
"location": "http://*************************************",
"subscription": {
"started": 1465834293,
"expired": 1473869493,
"payment": "account"
},
"is_expired": false,
"course_progress": {
"CMP1044": {
"course_name_en": "Java Programming",
"no_of_lessons": 30,
"viewed": 1,
"viewed_start": 1465834789,
"viewed_end": null,
"cert_attemptsCSV": null,
"cert_resetsCSV": null,
"cert_serial": null,
"high_score": null,
"location": "http://***************************"
}
}
}
}
I have managed to get all the elements out except the value in the course_progress item using the following:
SampleResourse obj = JsonConvert.DeserializeObject<SampleResourse>(s);
Response.Write(obj.Response.CourseProgress.CMP1044.CourseNameEn.ToString());
class SampleResourse
{
[JsonProperty("code")]
public int respcode { get; set; }
[JsonProperty("status")]
public string respStatus { get; set; }
[JsonProperty("response")]
public Response2 Response { get; set; }
}
class Response2
{
[JsonProperty("in_progress")]
public int InProgress { get; set; }
[JsonProperty("completed")]
public int Completed { get; set; }
[JsonProperty("passed")]
public int Passed { get; set; }
[JsonProperty("course_progress")]
public CourseProgress CourseProgress { get; set; }
}
class CourseProgress
{
[JsonProperty("CMP1044")]
public CMP10442 CMP1044 { get; set; }
}
class CMP10442
{
[JsonProperty("course_name_en")]
public string CourseNameEn { get; set; }
}
I need the elements course_name_en, no_of_lessons,viewed however there will be multiple properties similar to "CMP1044". Each "CMP" property will have a unique number. I want to list progress on each.

Simply change the following :
class Response2
{
[JsonProperty("in_progress")]
public int InProgress { get; set; }
[JsonProperty("completed")]
public int Completed { get; set; }
[JsonProperty("passed")]
public int Passed { get; set; }
[JsonProperty("course_progress")]
public Dictionary<string, CourseProgress> CourseProgress { get; set; }
}
class CourseProgress
{
[JsonProperty("course_name_en")]
public string CourseNameEn { get; set; }
}
To list the course name along with the id, you can do this:
var resource = Newtonsoft.Json.JsonConvert.DeserializeObject<SampleResourse>(json);
foreach (var kvp in resource.Response.CourseProgress)
{
Response.Write(kvp.Key + ":" + kvp.Value.CourseNameEn + Environment.NewLine);
}