Develop Reference

Accessing Nested Collection View JSON data

I have a nested JSON data to be accessed. The data is structured into nested data which i want to have into one.
I modeled the JSON response into c# model classes
public class Customer1
{
public string district { get; set; }
public string feeder { get; set; }
public string feeder_code { get; set; }
public string transformer { get; set; }
public string dss_code { get; set; }
public string database_match { get; set; }
public string accountnumber { get; set; }
public string meterno { get; set; }
public TransactionalDetails transactional_details { get; set; }
}
public class Customer2
{
public string accountNumber { get; set; }
public string meterNumber { get; set; }
public string phoneNumber { get; set; }
public int billedAmount { get; set; }
public object billedDate { get; set; }
public string lastPayDate { get; set; }
public Lastpayment lastpayment { get; set; }
}
public class Lastpayment
{
public string transactionRef { get; set; }
public int units { get; set; }
public string transactionDate { get; set; }
public string transactionId { get; set; }
public int transactionBookId { get; set; }
public int amountPaid { get; set; }
public int mscPaid { get; set; }
public string invoiceNumber { get; set; }
}
public class Queryresult
{
public string responseMessage { get; set; }
public Customer1 customer1 { get; set; }
public int responseCode { get; set; }
public string status { get; set; }
}
public class Result
{
public ObservableCollection<Customer1> Customer1 { get; set; }
public int row_count { get; set; }
}
public class Root
{
public bool error { get; set; }
public Result result { get; set; }
}
public class TransactionalDetails
{
public Queryresult queryresult { get; set; }
public bool status { get; set; }
}
I also created the following code to access the data using the root.
var data = JsonConvert.DeserializeObject<root>(readTask);
ObservableCollection<Customer1> innerData2 = data.result.Customer1;
My challenge is that i want to have Customer1, Customer2 and last payment data merged into a single collection view.
with what i have done, i can only access customer1 data. how can i access all into a single collection?

Deserialized Json object value is null

I'm not able to get the value from OneDay.price_change. The HTTP response is OK and I'm getting the following:
HTTP Response
"[{\"id\":\"BTC\",\"currency\":\"BTC\",\"symbol\":\"BTC\",\"name\":\"Bitcoin\",\"logo_url\":\"https://s3.us-east-2.amazonaws.com/nomics-api/static/images/currencies/btc.svg\",\"status\":\"active\",\"price\":\"60947.08258854\",\"price_date\":\"2021-10-31T00:00:00Z\",\"price_timestamp\":\"2021-10-31T18:51:00Z\",\"circulating_supply\":\"18860037\",\"max_supply\":\"21000000\",\"market_cap\":\"1149464232662\",\"market_cap_dominance\":\"0.4078\",\"num_exchanges\":\"397\",\"num_pairs\":\"67587\",\"num_pairs_unmapped\":\"5196\",\"first_candle\":\"2011-08-18T00:00:00Z\",\"first_trade\":\"2011-08-18T00:00:00Z\",\"first_order_book\":\"2017-01-06T00:00:00Z\",\"rank\":\"1\",\"high\":\"66082.82561618\",\"high_timestamp\":\"2021-10-20T00:00:00Z\",\"1h\":{\"volume\":\"1248590564.91\",\"price_change\":\"-85.32656234\",\"price_change_pct\":\"-0.0014\",\"volume_change\":\"-218879322.04\",\"volume_change_pct\":\"-0.1492\",\"market_cap_change\":\"-1607003923.65\",\"market_cap_change_pct\":\"-0.0014\"},\"1d\":{\"volume\":\"39937857069.60\",\"price_change\":\"-845.68642611\",\"price_change_pct\":\"-0.0137\",\"volume_change\":\"1918883279.43\",\"volume_change_pct\":\"0.0505\",\"market_cap_change\":\"-15892518975.54\",\"market_cap_change_pct\":\"-0.0136\"}}]\n"
However, for some reason, I'm not able to take the 1d price change. I'm not sure what could be the problem. Any help is appreciated!
Model:
public class OneHour
{
public string Volume { get; set; }
public string Price_change { get; set; }
public string Price_change_pct { get; set; }
public string Volume_change { get; set; }
public string Volume_change_pct { get; set; }
public string Market_cap_change { get; set; }
public string Market_cap_change_pct { get; set; }
}
public class OneDay
{
public string Volume { get; set; }
public string Price_change { get; set; }
public string Price_change_pct { get; set; }
public string Volume_change { get; set; }
public string Volume_change_pct { get; set; }
public string Market_cap_change { get; set; }
public string Market_cap_change_pct { get; set; }
}
public class CryptoApiMain
{
public OneHour OneHour { get; set; }
public OneDay OneDay { get; set; }
public string Id { get; set; }
public string Symbol { get; set; }
public string Status { get; set; }
public double Price { get; set; }
public string Price_date { get; set; }
public string Circulating_supply { get; set; }
public string Num_exchanges { get; set; }
public string Num_pairs { get; set; }
public string Rank { get; set; }
public string High { get; set; }
}
var theresponse = settingsService.CryptoApiResult(cryptoStock).Result;
foreach (var rez in theresponse)
{
<span id="stockSymbolCrypto">#cryptoStock</span>
<p>$#Convert.ToInt64(#rez.Price) #rez.OneDay.Price_change</p>
}
#rez.OneDay.Price_change error popup

Problem is that your property name in json (1d) and property name in c# model (OneDay) is not matching.
Use the below if you are using System.Text.Json (.Net Core 3.0 and newer)
[JsonPropertyName("1d")]
public OneDay OneDay { get; set; }
Use the below if you are using Newtonsoft (Before .Net Core 3.0)
[JsonProperty(PropertyName = "1d")]
public OneDay OneDay { get; set; }

Your " public OneHour OneHour { get; set; } " and " public OneDay OneDay { get; set; } " properties should be bind to [JsonProperty("1h")] and [JsonProperty("1d")]
try this
CryptoApiMain[] jsond = JsonConvert.DeserializeObject<CryptoApiMain[]>(json);
var price = jsond[0].OneDay.PriceChange;
result
-845.68642611
classes
public partial class CryptoApiMain
{
[JsonProperty("1h")]
public One OneHour { get; set; }
[JsonProperty("1d")]
public One OneDay { get; set; }
[JsonProperty("id")]
public string Id { get; set; }
[JsonProperty("currency")]
public string Currency { get; set; }
[JsonProperty("symbol")]
public string Symbol { get; set; }
[JsonProperty("name")]
public string Name { get; set; }
[JsonProperty("logo_url")]
public Uri LogoUrl { get; set; }
[JsonProperty("status")]
public string Status { get; set; }
[JsonProperty("price")]
public string Price { get; set; }
[JsonProperty("price_date")]
public DateTimeOffset PriceDate { get; set; }
[JsonProperty("price_timestamp")]
public DateTimeOffset PriceTimestamp { get; set; }
[JsonProperty("circulating_supply")]
public long CirculatingSupply { get; set; }
[JsonProperty("max_supply")]
public long MaxSupply { get; set; }
[JsonProperty("market_cap")]
public string MarketCap { get; set; }
[JsonProperty("market_cap_dominance")]
public string MarketCapDominance { get; set; }
[JsonProperty("num_exchanges")]
public long NumExchanges { get; set; }
[JsonProperty("num_pairs")]
public long NumPairs { get; set; }
[JsonProperty("num_pairs_unmapped")]
public long NumPairsUnmapped { get; set; }
[JsonProperty("first_candle")]
public DateTimeOffset FirstCandle { get; set; }
[JsonProperty("first_trade")]
public DateTimeOffset FirstTrade { get; set; }
[JsonProperty("first_order_book")]
public DateTimeOffset FirstOrderBook { get; set; }
[JsonProperty("rank")]
public long Rank { get; set; }
[JsonProperty("high")]
public string High { get; set; }
[JsonProperty("high_timestamp")]
public DateTimeOffset HighTimestamp { get; set; }
}
public partial class One
{
[JsonProperty("volume")]
public string Volume { get; set; }
[JsonProperty("price_change")]
public string PriceChange { get; set; }
[JsonProperty("price_change_pct")]
public string PriceChangePct { get; set; }
[JsonProperty("volume_change")]
public string VolumeChange { get; set; }
[JsonProperty("volume_change_pct")]
public string VolumeChangePct { get; set; }
[JsonProperty("market_cap_change")]
public string MarketCapChange { get; set; }
[JsonProperty("market_cap_change_pct")]
public string MarketCapChangePct { get; set; }
}

Issue in asp.net core model classes

This is my model class.
In RootObject class I have a list of Trans class.In .net core when I am passing values to RootObject through Postman,I am getting null in RootObject.
public class Trans
{
public string SubDetailID { get; set; }
public string TrnType { get; set; }
public decimal amount { get; set; }
public string BankCurrencyRate { get; set; }
public decimal AccountID { get; set; }
public string Currency { set; get; }
public string CurrencyRate { set; get; }
public decimal JVID { get; set; }
public string coa { get; set; }
public decimal BusinessID { get; set; }
}
public class RootObject
{
public int JVID { get; set; }
public string InvoiceRef { get; set; }
public DateTime JVDate { get; set; }
public string StoreID { get; set; }
public decimal BusinessID { get; set; }
public string UserID { get; set; }
public string Currency { get; set; }
public string Rate { get; set; }
public DateTime DueDate { get; set; }
public string Reference { get; set; } = "Client";
public decimal RefID { get; set; }
public string Narration { get; set; }
public string Type { get; set; } = "CA";
public virtual List<Trans> transaction { get; set; }
}

Deserializing the JSON Objest results in all null fields C#

My jsonResponse is something like this:
{"status":200,"data":{"first_name":"\u062e\u0633","last_name":"\u0635\u062f\u0627","national_code":"1","image_photo":"1.jpg","cellphone":"1234","city":{"id":1,"name":"x","created_at":"2017-02-27 17:54:44","updated_at":"2017-02-27 17:54:44"},"email":"something#gmail.com","even_odd":1,"Register Time":"2018-01-25 10:39:17","is_blocked":false,"receive_regular_offer":"false","level":1,"ride_count":0,"service_type":1,"bank":"\u0645","iban":"xy","card_number":"","holder":"\u062e\u0633","plate_number":"123","vehicle_model":"\u067e\u0698","vehicle_color":"\u062a\u0627\u06a9\u0633","unique_id":592875}}
I have created a class like this:
public class Driver
{
public string first_name { get; set; }
public string last_name { get; set; }
public string national_code { get; set; }
public string image_photo { get; set; }
public string cellphone { get; set; }
public string city { get; set; }
public string email { get; set; }
public string even_odd { get; set; }
public bool is_blocked { get; set; }
public bool receive_regular_offer { get; set; }
public string level { get; set; }
public string ride_count { get; set; }
public string service_type { get; set; }
public string bank { get; set; }
public string iban { get; set; }
public string card_number { get; set; }
public string holder { get; set; }
public string vehicle_model { get; set; }
public string vehicle_color { get; set; }
public string unique_id { get; set; }
}
and used this:
jsonResponse = reader.ReadToEnd();
JavaScriptSerializer js = new JavaScriptSerializer();
Driver snappDriver = js.Deserialize<Driver>(jsonResponse);
But the result is all null!

1.your class should be defined right
example:
void Main()
{
var json =api();
//dynamic
var dynamic_json = JsonConvert.DeserializeObject(json).Dump() as JObject;
//strong type
var strong_Type_json = JsonConvert.DeserializeObject<Driver>(json).Dump() ;
}
string api(){
return #"
{""status"":200,""data"":{""first_name"":""\u062e\u0633"",""last_name"":""\u0635\u062f\u0627"",""national_code"":""1"",""image_photo"":""1.jpg"",""cellphone"":""1234"",""city"":{""id"":1,""name"":""x"",""created_at"":""2017-02-27 17:54:44"",""updated_at"":""2017-02-27 17:54:44""},""email"":""something#gmail.com"",""even_odd"":1,""Register_Time"":""2018-01-25 10:39:17"",""is_blocked"":false,""receive_regular_offer"":""false"",""level"":1,""ride_count"":0,""service_type"":1,""bank"":""\u0645"",""iban"":""xy"",""card_number"":"""",""holder"":""\u062e\u0633"",""plate_number"":""123"",""vehicle_model"":""\u067e\u0698"",""vehicle_color"":""\u062a\u0627\u06a9\u0633"",""unique_id"":592875}}
";
}
public class City
{
public int id { get; set; }
public string name { get; set; }
public string created_at { get; set; }
public string updated_at { get; set; }
}
public class Data
{
public string first_name { get; set; }
public string last_name { get; set; }
public string national_code { get; set; }
public string image_photo { get; set; }
public string cellphone { get; set; }
public City city { get; set; }
public string email { get; set; }
public int even_odd { get; set; }
public string Register_Time { get; set; }
public bool is_blocked { get; set; }
public string receive_regular_offer { get; set; }
public int level { get; set; }
public int ride_count { get; set; }
public int service_type { get; set; }
public string bank { get; set; }
public string iban { get; set; }
public string card_number { get; set; }
public string holder { get; set; }
public string plate_number { get; set; }
public string vehicle_model { get; set; }
public string vehicle_color { get; set; }
public int unique_id { get; set; }
}
public class Driver
{
public int status { get; set; }
public Data data { get; set; }
}
2.json's key Register Time in strong type is invalid name
you can add _ in your json string to solve the problem

Try to create exactly the same class definition as your json has. Your Driver class describes json object's data property.
public class DriverWrapper
{
public string status { get; set; }
public Driver data { get; set; }
}

You have to create another object class that handles status and data property
try this
Create a class Response
class Response{
public int status { get; set;}
public Driver data { get; set;}
}
and do it this way
jsonResponse = reader.ReadToEnd();
JavaScriptSerializer js = new JavaScriptSerializer();
Response snappDriver = js.Deserialize<Response>(jsonResponse);

Could not cast or convert from {null} to system.Int32 in JSON response C#

I'm getting the following exception when using this bit of code to deserialize a JSON response from CrunchBase. The weird thing is it only happens to certain pages that are being deserialized even though both the results that work fine and the ones that don't both have empty [], empty"", and null values in key:value pairs. How can I cast or correct my mistake?
Exception gets thrown here:
JsonSerializer serializer = new JsonSerializer();
RootObject ro = JsonConvert.DeserializeObject<RootObject>(response);
The inner exception is:
InnerException:
Message=Could not cast or convert from {null} to System.Int32.
Source=Newtonsoft.Json
Thanks for your eyes in advance!
Update:
as asked for the structure of the root object and the additional objects on that JSON endpoint. These were generated by http://json2csharp.com/ after putting the URL of the JSON endpoint into it.
The JSON is long so here are two example links: this one works without error http://api.crunchbase.com/v/1/company/kiip.js , while this other (and others) throws the exception http://api.crunchbase.com/v/1/company/tata-communications.js
public class Image
{
public List<List<object>> available_sizes { get; set; }
public object attribution { get; set; }
}
public class Person
{
public string first_name { get; set; }
public string last_name { get; set; }
public string permalink { get; set; }
}
public class Relationship
{
public bool is_past { get; set; }
public string title { get; set; }
public Person person { get; set; }
}
public class Provider
{
public string name { get; set; }
public string permalink { get; set; }
}
public class Providership
{
public string title { get; set; }
public bool is_past { get; set; }
public Provider provider { get; set; }
}
public class FinancialOrg
{
public string name { get; set; }
public string permalink { get; set; }
}
public class Person2
{
public string first_name { get; set; }
public string last_name { get; set; }
public string permalink { get; set; }
}
public class Investment
{
public object company { get; set; }
public FinancialOrg financial_org { get; set; }
public Person2 person { get; set; }
}
public class FundingRound
{
public string round_code { get; set; }
public string source_url { get; set; }
public string source_description { get; set; }
public double raised_amount { get; set; }
public string raised_currency_code { get; set; }
public int funded_year { get; set; }
public int funded_month { get; set; }
public int funded_day { get; set; }
public List<Investment> investments { get; set; }
}
public class Office
{
public string description { get; set; }
public string address1 { get; set; }
public string address2 { get; set; }
public string zip_code { get; set; }
public string city { get; set; }
public string state_code { get; set; }
public string country_code { get; set; }
public object latitude { get; set; }
public object longitude { get; set; }
}
public class VideoEmbed
{
public string embed_code { get; set; }
public string description { get; set; }
}
public class Screenshot
{
public List<List<object>> available_sizes { get; set; }
public object attribution { get; set; }
}
public class RootObject
{
public string name { get; set; }
public string permalink { get; set; }
public string crunchbase_url { get; set; }
public string homepage_url { get; set; }
public string blog_url { get; set; }
public string blog_feed_url { get; set; }
public string twitter_username { get; set; }
public string category_code { get; set; }
public int number_of_employees { get; set; }
public int founded_year { get; set; }
public int founded_month { get; set; }
public object founded_day { get; set; }
public object deadpooled_year { get; set; }
public object deadpooled_month { get; set; }
public object deadpooled_day { get; set; }
public object deadpooled_url { get; set; }
public string tag_list { get; set; }
public string alias_list { get; set; }
public string email_address { get; set; }
public string phone_number { get; set; }
public string description { get; set; }
public string created_at { get; set; }
public string updated_at { get; set; }
public string overview { get; set; }
public Image image { get; set; }
public List<object> products { get; set; }
public List<Relationship> relationships { get; set; }
public List<object> competitions { get; set; }
public List<Providership> providerships { get; set; }
public string total_money_raised { get; set; }
public List<FundingRound> funding_rounds { get; set; }
public List<object> investments { get; set; }
public object acquisition { get; set; }
public List<object> acquisitions { get; set; }
public List<Office> offices { get; set; }
public List<object> milestones { get; set; }
public object ipo { get; set; }
public List<VideoEmbed> video_embeds { get; set; }
public List<Screenshot> screenshots { get; set; }
public List<object> external_links { get; set; }
}

Json.NET supports JSON Schema. You could create a schema with all the required properties marked and validate incoming JSON against it before deserializing. In this you can check if value is null you can make change it to some default value.
Hope this works for you.