using System;

public class Program

{

    public static void Main()

    {

        Sample sampleInstance = new Sample();

        sampleInstance.ID = 120;

        Console.WriteLine("ID : {0}\nProperty : {1}",sampleInstance.ID, sampleInstance.Property );

    }

        class Sample

    {

        private int _Property;

        private int _ID;

        public int Property

        {

            get { return _Property; }

        }

        public int ID

        {

            get { return _ID; }

            set

            {

                _ID = value;

                _Property = value;

            }

        }

    }

}