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 test06

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            Bitmap bitmap_out = new Bitmap(6376, 10805,  System.Drawing.Imaging.PixelFormat.Format32bppArgb);

            Bitmap bitmap_out2 = new Bitmap(6376, 10805, System.Drawing.Imaging.PixelFormat.Format32bppArgb); //※2

            Graphics graphics = Graphics.FromImage(bitmap_out);



            for (int i = 0; i < bitmap_out.Width; i += 50)

            {

                graphics.DrawLine(Pens.Black, i, 0, i, bitmap_out.Height);

            }

            for (int i = 0; i < bitmap_out.Height; i += 50)

            {

                graphics.DrawLine(Pens.Black, 0, i, bitmap_out.Width, i);

            }

            graphics.Dispose();



            if (this.pictureBox1.Image != null)

            {

                this.pictureBox1.Image.Dispose();

            }

            this.pictureBox1.Image = null;

            //this.pictureBox1.Image = new Bitmap(bitmap_out);

            //bitmap_out.Dispose();

            this.pictureBox1.Image = bitmap_out;

        }

    }

}