2D Graphics C#

/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace GDI_Basics
{
    /// 
    /// Summary description for GradientBrushes.
    /// 

    public class GradientBrushes : System.Windows.Forms.Form
    {
        /// 
        /// Required designer variable.
        /// 

        private System.ComponentModel.Container components = null;
        public GradientBrushes()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }
        /// 
        /// Clean up any resources being used.
        /// 

        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }
        #region Windows Form Designer generated code
        /// 
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 

        private void InitializeComponent()
        {
            // 
            // GradientBrushes
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(388, 298);
            this.Name = "GradientBrushes";
            this.Text = "GradientBrushes";
            this.Resize += new System.EventHandler(this.GradientBrushes_Resize);
            this.Paint += new System.Windows.Forms.PaintEventHandler(this.GradientBrushes_Paint);
        }
        #endregion
        [STAThread]
        static void Main() 
        {
            Application.Run(new GradientBrushes());
        }
        private void GradientBrushes_Resize(object sender, System.EventArgs e)
        {
            this.Invalidate();
        }
        private void GradientBrushes_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            ArrayList stylesShown = new ArrayList();
            LinearGradientBrush myBrush;
            int y = 20;
            int x = 20;
    
            foreach (LinearGradientMode gradientStyle in System.Enum.GetValues(typeof(LinearGradientMode)))
            {
                myBrush = new LinearGradientBrush(new Rectangle(x, y, 100, 60), Color.Violet, Color.White, gradientStyle);
                e.Graphics.FillRectangle(myBrush, x, y, 100, 60);
                e.Graphics.DrawString(gradientStyle.ToString(), new Font("Tahoma", 8), Brushes.Black, 110 + x, y + 20);
                y += 70;
            }
        }
    }
}