read only property

using System;
class Rectangle
{
    public int Width;
    public int Height;

    public int Area
    {
        get
        {
            return Width * Height;
        }
    }
}


class Program
{
    static void Main(string[] args)
    {
        Rectangle r = new Rectangle();
        r.Width = 5;
        r.Height = 6;
        Console.WriteLine(r.Area);


    }
}