using System;

using System.Globalization;

using System.Threading.Tasks;

using System.Collections.Generic;

using System.Linq;

using Newtonsoft.Json.Linq;                 

​

public class Program

{

    public static void Main()

    {

        var job = new JObject();

        var asd = job["hahah"]?.ToString();

        if(asd == null)

        {

        Console.WriteLine("Ok nice");   

        }

    }

}