using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        var d =JsonConvert.DeserializeObject<structure>("{'text':'333'}"); 

        if(d != null){

            Console.WriteLine(d.text);

        }else{

            Console.WriteLine("Error");

        }

    }

}

​

public class structure{

​

public string text = "55";

}