2D Graphics C#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    protected override void OnPaint(PaintEventArgs e) {
        Pen p = new Pen(Color.HotPink, 10);
        p.DashStyle = DashStyle.DashDot;
        Graphics g = this.CreateGraphics();
        g.DrawEllipse(p, 10, 15, 105, 250);
    }
}