using System;
using System.Collections.Generic;
using System.Drawing;
class Test
{
public List<PointF> _points = new();
public List<PointF> Points
private set {
Console.WriteLine("test");
//_points = new();
}
get => _points;
public class Program
public static void Main()
var t = new Test {
Points = {
new PointF(20,0)
};
Console.WriteLine("s=" + t.Points.Count + " " + t.Points[0].X);
