Display images one by one in the Windows Form folder on PictureBox

using System;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form 1:Form
    {
        private int Index;
        private bool IsMouseMode;

        public Form 1()
        {
            InitializeComponent();
            IsMouseMode=false;
        }

        private void Form1_Load(object sender, EventArgse)
        {
            // Create 64 original animation images
            CreateSampleImage();
        }

        private void CreateSampleImage()
        {
            var bmp = new Bitmap(64,64);
            range=Enumerable.Range(0,64);
            // Fill out the background appropriately
            var zip = from x in range
                      from y in range
                      select new {x,y};
            zip.ToList().ForEach(p=>{bmp.SetPixel(p.x, p.y, Color.Black);});
            //Sine painting
            range.Select(x=>
            {
                varrad=System.Math.PI*x/12d;
                return new { x = x, y = (int) (Math.Sin(rad)*5+bmp.Height/2)};
            }).ToList().ForEach(p=>
            {
                bmp.SetPixel(p.x, p.y, Color.White);
                bmp.Save(string.Format("{0}.png", p.x), ImageFormat.Png);
            });
        }

        private voidForm1_Shown(object sender, EventArgse)
        {
            Text = "Fastest Animation";
            DrawRapidly();
            Text="10 FPS Animation";
            DrawOnTimer(100);// Ends Click Animation Mode when exiting
        }

        /// <summary>
        /// Anyway, I'm going to draw an animation at the fastest speed.
        /// </summary>
        private void DrawRapidly()
        {
            pictureBox1.WaitOnLoad=true;
            Enumerable.Range(0,64).ToList().ForEach(i=>
            {
                pictureBox1.Load(string.Format("{0}.png", i));
                pictureBox1.Update();
            });
        }

        /// <summary>
        /// draw according to the interval between
        /// </summary>
        /// <param name="interval"></param>
        private void DrawOnTimer (int interval)
        {
            timer1.Interval=interval;
            pictureBox1.WaitOnLoad=false;
            Index = 0;
            timer1.Start();
        }

        private void timer1_Tick(object sender, EventArgse)
        {
            pictureBox1.LoadAsync(string.Format("{0}.png", Index));
            pictureBox1.Update();
            Index++;
            if (64<=Index)
            {
                timer1.Stop();
                DrawOnClick();
            }
        }

        private void DrawOnClick()
        {
            Text="Click Animation";
            IsMouseMode=true;
            Index = 0;
        }

        /// <summary>
        /// Left-click to stretch the line.draw a line so that it shrinks with other than that
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void pictureBox1_MouseClick(object sender, MouseEventArgse)
        {
            if(!IsMouseMode) return;
            Index+=e.Button==MouseButtons.Left?1:-1;
            Index = Math.Max (Math.Min (Index, 63), 0);
            pictureBox1.LoadAsync(string.Format("{0}.png", Index));
        }
    }
}