Convert JSON Object to C# Object

Question

I have a json object and I am trying to convert it to my c# object. Here is my JSON:

{"GuvenlikNoktaArray": {"GuvenlikNoktası": [{"Id": 1,"GuvenlikNoktası1":"SANTIYE","KartNo":"000001889174217","Sira": 1},{"Id": 2,"GuvenlikNoktası1":"INSAAT","KartNo":"000000803567858","Sira": 2},{"Id": 3,"GuvenlikNoktası1":"ÇALISMA","KartNo":"000003417926233","Sira": 3},{"Id": 4,"GuvenlikNoktası1":"GÜVENLIK","KartNo":"000001888909897","Sira": 4}]}}

And my c# class:

 public partial class GuvenlikNoktası
{
    public GuvenlikNoktası()
    {
        this.GüvenlikNoktasıOlay = new HashSet<GüvenlikNoktasıOlay>();
        this.PanikButonuAlarmlari = new HashSet<PanikButonuAlarmlari>();
    }

    public int Id { get; set; }
    public string GuvenlikNoktası1 { get; set; }
    public string KartNo { get; set; }
    public string Sira { get; set; }

    public virtual ICollection<GüvenlikNoktasıOlay> GüvenlikNoktasıOlay { get; set; }
    public virtual ICollection<PanikButonuAlarmlari> PanikButonuAlarmlari { get; set; }
}

And last, my convert try:

public void AddIstasyon(string json_string)
{
    GuvenlikNoktası result = new JavaScriptSerializer().Deserialize<GuvenlikNoktası>(json_string);
}

I don't get any errors but when I debuged, I see that all attributes inside 'result' are null. It seems like an empty object. How can I get a correct 'GuvenlikNoktası' object ? (Btw I am pretty sure I am getting the json object correctly).

First of all, your Sira property is defined as a string when in the JSON array, it is an integer. — ThePerplexedOne
– ThePerplexedOne, Commented Oct 4, 2016 at 8:37
Secondly, when you're deserializing, it seems you're deserializing your JSON into a single instance of your GuvenlikNoktası class, when the JSON itself is an array of said class. — ThePerplexedOne
– ThePerplexedOne, Commented Oct 4, 2016 at 8:40
Your JSON and Class structure does not matchs. Also using Newtonsoft.Json gives much more performance. — Cihan Uygun
– Cihan Uygun, Commented Oct 4, 2016 at 8:47

Cihan Uygun · Accepted Answer · 2016-10-04 08:54:07Z

If you must keep this JSON structure as-is you may use JObject to navigate inside your JSON properties until you reach your target objects to deserizlize. Please can you try the code below;

PS: This code uses Newtonsoft.Json;

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SO_39847703
{
    class Program
    {
        static void Main(string[] args)
        {
            string json = "{\"GuvenlikNoktaArray\": {\"GuvenlikNoktası\": [{\"Id\": 1,\"GuvenlikNoktası1\":\"SANTIYE\",\"KartNo\":\"000001889174217\",\"Sira\": 1},{\"Id\": 2,\"GuvenlikNoktası1\":\"INSAAT\",\"KartNo\":\"000000803567858\",\"Sira\": 2},{\"Id\": 3,\"GuvenlikNoktası1\":\"ÇALISMA\",\"KartNo\":\"000003417926233\",\"Sira\": 3},{\"Id\": 4,\"GuvenlikNoktası1\":\"GÜVENLIK\",\"KartNo\":\"000001888909897\",\"Sira\": 4}]}}";
            AddIstasyon(json);
        }

        public static void AddIstasyon(string json_string)
        {
            dynamic jsonObject = JObject.Parse(json_string);
            string jsonToDeserializeStrongType = jsonObject["GuvenlikNoktaArray"]["GuvenlikNoktası"].ToString();
            List<GuvenlikNoktası> result = JsonConvert.DeserializeObject<List<GuvenlikNoktası>>(jsonToDeserializeStrongType); ;
        }
    }

    public partial class GuvenlikNoktası
    {
        public GuvenlikNoktası()
        {
            this.GüvenlikNoktasıOlay = new HashSet<GüvenlikNoktasıOlay>();
            this.PanikButonuAlarmlari = new HashSet<PanikButonuAlarmlari>();
        }

        public int Id { get; set; }
        public string GuvenlikNoktası1 { get; set; }
        public string KartNo { get; set; }
        public string Sira { get; set; }

        public virtual ICollection<GüvenlikNoktasıOlay> GüvenlikNoktasıOlay { get; set; }
        public virtual ICollection<PanikButonuAlarmlari> PanikButonuAlarmlari { get; set; }
    }

    public class GüvenlikNoktasıOlay
    {

    }

    public class PanikButonuAlarmlari
    {

    }
}

Hope this helps

Ralf Bönning · Accepted Answer · 2016-10-04 08:51:00Z

1

Your JSON data and your class definition do not fit together. Therefore the default values (NULL) are provided by the serializer.

In order to deserialize the given JSON data you need a class structure like:

public class Root
{
     public LevelOne GuvenlikNoktaArray {get; set;}
}

public class LevelOne {
    public IEnumerable<GuvenlikNoktası> GuvenlikNoktası {get; set;}
}

answered Oct 4, 2016 at 8:51

Ralf Bönning

15.7k6 gold badges56 silver badges71 bronze badges

1 Comment

Daniel Minnaar Over a year ago

Yes, rboe is correct. Use this https://jsonformatter.curiousconcept.com/ to see how the structure looks, and then use this http://json2csharp.com/ so see the structure it needs to be parsed to.

Manish Sharma · Accepted Answer · 2016-10-04 08:55:17Z

0

You can use this class.

public class GuvenlikNoktası
{
    public int Id { get; set; }
    public string GuvenlikNoktası1 { get; set; }
    public string KartNo { get; set; }
    public int Sira { get; set; }
}

public class GuvenlikNoktaArray
{
    public IList<GuvenlikNoktası> GuvenlikNoktası { get; set; }
}

public class Example
{
    public GuvenlikNoktaArray GuvenlikNoktaArray { get; set; }
}

You can use this link For your referencehttp://jsonutils.com/.

answered Oct 4, 2016 at 8:55

Manish Sharma

2,4562 gold badges18 silver badges33 bronze badges

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