This program is to teach basic graphics for beginners

frmGraphics.cs

// frmGraphics.cs
// This program is to teach basic graphics for beginners
// need to add btnDraw and Timer1
// programmer: Dr. Aung Win Htut (Green Hackers)
// https://www.facebook.com/GreenHackersOTC
///////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;


namespace _2018041501_CS_TrigoTest
{
    public partial class frmGraphics : Form
    {
        Graphics myGraphics;
        int i = 0;

        public frmGraphics()
        {
            InitializeComponent();
        }

        private void btnDraw_Click(object sender, EventArgs e)
        {
            draw();
        }

        void draw()
        {
            myGraphics = base.CreateGraphics();
            Pen myPen = new Pen(Color.Blue);
            SolidBrush mySolidBrush = new SolidBrush(Color.Green);
            myGraphics.Clear(Color.White);
            myGraphics.DrawEllipse(myPen, i * 2, i, 50, 50);
            myGraphics.Dispose();
            timer1.Enabled = true;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            timer1.Enabled = false;
            i = i + 5;
            draw();
        }

    }
}