using System;

using Newtonsoft.Json;

​

​

public class Program

{

    public static void Main()

    {

        ColorInfo clsInfo = new ColorInfo(){ColorId="1", ColorName="Red"};

        String jsonOutput = JsonConvert.SerializeObject(clsInfo);

        Console.WriteLine(jsonOutput);

    }

    public class ColorInfo

    {

        public string ColorId {get;set;}

        public string ColorName{get;set;}

    }

}