Drawing to the screen-new

Question

Hello, I want to draw an ellipse to the screen and then fill it. I have the following code, but the program doesn't run fast, I have to minimize and to maximize the window in order to draw the ellipse. I just want the program to run fast.

 

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
//Ellipse Issue
namespace WDrawingToTheScreen
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            this.pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.FillEllipseRectangle);
        }

        private void FillEllipseRectangle(object sender, PaintEventArgs e)
        {
            MessageBox.Show("very well done!");
            Pen itsme = new Pen(Color.Green, 3);
            //Draw the ellipse
            int x = 5;
            int y = 5;
            int width = 200;
            int height = 100;
            rect = new Rectangle(x, y, width, height);
            e.Graphics.DrawEllipse(itsme, rect);
            //fill the ellipse
            int x1= 5;
            int y1 = 5;
            int width1 = 200;
            int height1 = 100;
            rect1 = new Rectangle(x1, y1, width1, height1);
            SolidBrush redBrush = new SolidBrush(Color.Red);
            e.Graphics.FillEllipse(redBrush, this.rect1);
        }
        public System.Drawing.Rectangle rect { get; set; }
        public System.Drawing.Rectangle rect1 { get; set; }
    }
}