How to convert array(string[]) to JsonValue?

Question

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

namespace StackOverflowQuestion
{
    class StackOverflowQuestion
    {
        public StackOverflowQuestion()
        {
            JsonObject  jsonObj = new JsonObject();
            string[] arr = { "first_value", "second_value", "third_value"          };
            obj.Add("array", arr ); // Compiler cannot convert string[] to System.Json.JsonValue

        }
    }
}

I want to receive in result Json object like

{"array":["first_value","second_value","third_value"]"}

Don't use JavaScriptSerializer. It's obsolete. Microsoft itself uses Json.NET — Panagiotis Kanavos
– Panagiotis Kanavos, Commented Oct 11, 2017 at 15:34

d.moncada · Accepted Answer · 2017-10-11 16:22:17Z

1

Create a wrapper class that you serialize that has an "Array" property. This will allow the JSON serialized object to have the "Array" field name you are looking for.

var array = { "first_value", "second_value", "third_value" };
var json = JsonConvert.SerializeObject(new JsonArray
{
    Array = array,
    Some_Field = true
});

public class JsonArray
{
    public string[] Array { get; set; }

    public bool Some_Field { get; set; }
}

Note, this uses Json.NET, which you can download/find more info about here: https://www.newtonsoft.com/json

edited Oct 11, 2017 at 16:22

answered Oct 11, 2017 at 15:38

d.moncada

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1 Comment

J. Huxley Over a year ago

Okay. But how to generate such json: {"some_field":true,"array":["first_value","second_value","third_value"]"}

GGO · Accepted Answer · 2017-10-11 15:32:18Z

0

You can use JavaScriptSerializer instead of declaring a JsonObject

string[] arr = { "first_value", "second_value", "third_value"          };
new JavaScriptSerializer().Serialize(arr)

answered Oct 11, 2017 at 15:32

GGO

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Comments

Sandeep P Pillai · Accepted Answer · 2017-10-11 15:35:43Z

0

You can use

 JObject json = JObject.Parse(str);

Please refer this.

answered Oct 11, 2017 at 15:35

Sandeep P Pillai

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Comments

LenglBoy · Accepted Answer · 2017-10-11 15:39:11Z

Download/install NuGet package "Newtonsoft.Json" and then try this:

string[] arr = { "first_value", "second_value", "third_value"};
var json = JsonConvert.SerializeObject(arr);

So there is no Wrapper and so the json-string is looking like this:

[
   "first_value",
   "second_value",
   "third_value"
]

If you would use a warpper (Person.class) with data in it, it would look like this:

// Structure....
Person
   private String name;
   private String lastName;
   private String[] arr;   // for your example...

JsonConvert.SerializeObject(person);
{
    "Person": {
        "name": "<VALUE>",
        "lastName": <VALUE>,
        "arr":[
             "first_value",
             "second_value",
             "third_value"
        ]
    }
}

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