using System;

​

public class Program

{

    public static void Main()

    {

        var p = new Point(2, 5);

        Console.WriteLine(Display(p));

        Console.WriteLine(DisplayWithPropertyPatterns1(p));

    }

​

    static string Display(object o)

    {

        switch (o)

        {

            case Point p when p.X == 0 && p.Y == 0:

                return "origin";

            case Point p:

                return $"({p.X}, {p.Y})";

            default:

                return "unknown";

        }

    }

​

    static string DisplayWithPropertyPatterns1(object o) => o switch

    {

        Point { X: 0, Y: 0 }         p => "origin",

        Point { X: var x, Y: var y } p => $"({x}, {y})",

        _                              => "unknown"

    };

    public class Point

    {

        public int X

        {

            get;

        }

​

        public int Y

        {

            get;

        }

​

        public Point(int x1, int y1) => (X, Y) = (x1, y1);

    }

}