Convert JSON to C# Structure

Objective

Convert Received JSON from API to useful C# data structure

Overview

Process involved with the following:

1. Using online tool to convert the json schema into C# data structure
2. Save the C# data structure as DTO class
3. Convert the JSON Data to DTO class
4. Accessing the DTO data

Example JSON Data

{
  "code": "200",
  "msg": "the results is:",
  "result": [
    {
      "Position": "{\"address\":\"Opp Seletar Airport, Singapore\",\"lat\":1.4208723379839088,\"lng\":103.86265088778731,\"zoom\":18,\"place_id\":\"ChIJeVt1C0oU2jERl9Y4zZM8jdg\",\"city\":\"Singapore\",\"country\":\"Singapore\",\"country_short\":\"SG\"}",
      "coin_value": "1",
      "desc": "Dino Testing File",
      "object_url": "https://mergingreality.co/wp-content/uploads/2021/08/dino.coinobj",
      "lat": 1.4208723379839088,
      "lng": 103.86265088778731
    },
    {
      "Position": "{\"address\":\"104 Taman Permata, Macritchie Petai Trail, Singapore 575227\",\"lat\":1.3478748075656783,\"lng\":103.83246180963138,\"zoom\":14,\"place_id\":\"ChIJIRozPoQX2jERs3dV7RVwBSQ\",\"street_number\":104,\"street_name\":\"Taman Permata\",\"city\":\"Singapore\",\"post_code\":575227,\"country\":\"Singapore\",\"country_short\":\"SG\"}",
      "coin_value": "1",
      "desc": "this is a merlion",
      "object_url": "https://mergingreality.co/wp-content/uploads/2021/09/YWS.fbx",
      "lat": 1.3478748075656783,
      "lng": 103.83246180963138
    }
  ]
}

Convert JSON TO C# Data Structure

https://json2csharp.com/

// Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse); 
    public class Result
    {
        [JsonProperty("Position")]
        public string Position { get; set; }

        [JsonProperty("coin_value")]
        public string CoinValue { get; set; }

        [JsonProperty("desc")]
        public string Desc { get; set; }

        [JsonProperty("object_url")]
        public string ObjectUrl { get; set; }

        [JsonProperty("lat")]
        public double Lat { get; set; }

        [JsonProperty("lng")]
        public double Lng { get; set; }
    }

    public class Root
    {
        [JsonProperty("code")]
        public string Code { get; set; }

        [JsonProperty("msg")]
        public string Msg { get; set; }

        [JsonProperty("result")]
        public List<Result> Result { get; set; }
    }


``

## Save the C# Data structure as DTO class
1. Create a DTO class
2. Using system and generic collection
3. add the namespace
4. changing the root to the DTO class name
5. add [Serializable] to the fields

![2021-10-01_08-27-16](media/16330464584609/2021-10-01_08-27-16.png)

Completed code:

```csharp
using System;
using System.Collections.Generic;

namespace Assets.Scripts.Models.CoinObj
{
    [Serializable]
    public class CoinObjByEventResultDTO
    {
        public string code { get; set; }
        public string msg { get; set; }
        public List<Result> Result { get; set; }
    }

    [Serializable]
    public class Result
    {
        public string Position { get; set; }
        public string coin_value { get; set; }
        public string desc { get; set; }
        public string object_url { get; set; }
        public double lat { get; set; }
        public double lng { get; set; }
    }

}

Use the C# Data

        CoinObjByEventResultDTO coinObjByEventResult = JsonConvert.DeserializeObject<CoinObjByEventResultDTO>(response.DataAsText);
        Debug.Log(coinObjByEventResult.Result[0].lat.ToString());