Paint along points in a list points

   
 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class MainForm : Form {
    private List<Point> myPts = new List<Point>();

    public MainForm() {
        this.Text = "Basic Paint Form";
        this.Paint += new PaintEventHandler(MainForm_Paint);
        this.MouseDown += new MouseEventHandler(MainForm_MouseDown);
    }

    void MainForm_MouseDown(object sender, MouseEventArgs e) {
        myPts.Add(new Point(e.X, e.Y));
        Invalidate();
    }

    public void OnPaint(PaintEventArgs e) {
        Graphics g = e.Graphics;
        g.DrawString("Hello GDI+", new Font("Times New Roman", 20),Brushes.Green, 0, 0);

        foreach (Point p in myPts)
            g.FillEllipse(Brushes.Firebrick, p.X, p.Y, 10, 10);
    }
}