How to Convert Json Text into Objects Using C#

To create a class off a json string, copy the string.

In Visual Studio, click Edit > Paste special > Paste Json as classes.

First create a class to represent your json data.

public class MyFlightDto
{
    public string err_code { get; set; }
    public string org { get; set; } 
    public string flight_date { get; set; }
    // Fill the missing properties for your data
}

Using Newtonsoft JSON serializer to Deserialize a json string to it's corresponding class object.

var jsonInput = "{ org:'myOrg',des:'hello'}"; 
MyFlightDto flight = Newtonsoft.Json.JsonConvert.DeserializeObject<MyFlightDto>(jsonInput);

Or Use JavaScriptSerializer to convert it to a class(not recommended as the newtonsoft json serializer seems to perform better).

string jsonInput="have your valid json input here"; //
JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
Customer objCustomer  = jsonSerializer.Deserialize<Customer >(jsonInput)

Assuming you want to convert it to a Customer classe's instance. Your class should looks similar to the JSON structure (Properties)

copy your Json and paste at textbox on and click on Generate button,

A cs class will be generated use that cs file as below:

var generatedcsResponce = JsonConvert.DeserializeObject(yourJson);

where RootObject is the name of the generated cs file;

This will take a json string and turn it into any class you specify

public static T ConvertJsonToClass<T>(this string json)
    {
        System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
        return serializer.Deserialize<T>(json);
    }

class Program
{
    static void Main(string[] args)
    {
        var res = Json; //Json that has to be converted

        Response resp = new Response();
        resp = JsonSerializer.Deserialize<Response>(res);

        Console.WriteLine(res);
    }
}

public class Response
{
    public bool isValidUser { get; set; }
    public string message { get; set; }
    public int resultKey { get; set; }
}