namespace DrawingTest
{
    using System;
    using System.Drawing;
    using System.Windows.Forms;


    public partial class Form1 : Form
    {
        private const int SIZE = 100;
        private const int TILE_COUNT = 4;

        public Form1()
        {
            InitializeComponent();
            ClientSize = new Size
            {
                Height = SIZE * TILE_COUNT,
                Width = SIZE * TILE_COUNT
            };

            //Paint += Form1_Paint;
        }

        //private void Form1_Paint(object sender, PaintEventArgs e)
        //{
        //    Graphics g = e.Graphics;

        //    for (int i = 0; i < TILE_COUNT; ++i)
        //    {
        //        for (int j = 0; j < TILE_COUNT; ++j)
        //        {
        //            g.FillRectangle(new SolidBrush(Color.AliceBlue), new Rectangle
        //            {
        //                Height = SIZE,
        //                Width = SIZE,
        //                X = j * SIZE,
        //                Y = i * SIZE
        //            });
        //            g.DrawRectangle(new Pen(Color.Black), new Rectangle
        //            {
        //                Height = SIZE,
        //                Width = SIZE,
        //                X = j * SIZE,
        //                Y = i * SIZE
        //            });
        //        }
        //    }
        //}

        protected override void OnClick(EventArgs e)
        {
            Graphics g = CreateGraphics();

            for (int i = 0; i < TILE_COUNT; ++i)
            {
                for (int j = 0; j < TILE_COUNT; ++j)
                {
                    g.FillRectangle(new SolidBrush(Color.AliceBlue), new Rectangle
                    {
                        Height = SIZE,
                        Width = SIZE,
                        X = j * SIZE,
                        Y = i * SIZE
                    });
                    g.DrawRectangle(new Pen(Color.Black), new Rectangle
                    {
                        Height = SIZE,
                        Width = SIZE,
                        X = j * SIZE,
                        Y = i * SIZE
                    });
                }
            }
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            //Graphics g = e.Graphics;

            //for (int i = 0; i < TILE_COUNT; ++i)
            //{
            //    for (int j = 0; j < TILE_COUNT; ++j)
            //    {
            //        g.FillRectangle(new SolidBrush(Color.AliceBlue), new Rectangle
            //        {
            //            Height = SIZE,
            //            Width = SIZE,
            //            X = j * SIZE,
            //            Y = i * SIZE
            //        });
            //        g.DrawRectangle(new Pen(Color.Black), new Rectangle
            //        {
            //            Height = SIZE,
            //            Width = SIZE,
            //            X = j * SIZE,
            //            Y = i * SIZE
            //        });
            //    }
            //}
        }
    }
}