C#新人，请教各位大神图片显示问题！

Question

想法：让某个目录下的图片在Picturebox中每隔5秒显示一张。控件：picturebox,imagelist,timer结果：显示出来的是很小很小的图标，改了下imagelist里面的图像大小，最大也是256，显示出来的根本不是原图大小。咱是个年纪大的新手，最好大师们能麻烦下，能否提供源码让咱学习下。

Answer 1

我是看百度上说的，要连续显示图片要imagelist和picturebox合起来用

Answer 2

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.IO;
using System.Drawing;
namespace Demo
{
    public partial class Form1 : Form
    {
        ImagePlayer player = null;
        public Form1()
        {
            InitializeComponent();            player = new ImagePlayer(pictureBox1, "pic");
            player.Interval = 5000;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            player.Play();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            player.Stop();
        }
    }    public interface IPlayer
    {
        void Play();
        void Stop();
    }    public class ImagePlayer : IPlayer
    {
        private readonly string[] EXTENSIONS = { "bmp", "jpg", "jpeg", "png", "gif" };
        private IList<Image> images;
        private PictureBox canvas;
        private int frameIndex;
        private System.Windows.Forms.Timer timer;        public int Interval
        {
            get { return this.timer.Interval; }
            set { this.timer.Interval = value; }
        }        public ImagePlayer(PictureBox canvas, string directoryName)
        {
            this.timer = new Timer();
            this.timer.Interval = 1000;
            this.timer.Tick += new EventHandler(timer_Tick);            this.LoadImages(directoryName);            this.canvas = canvas;
            this.frameIndex = 0;            if (images.Count > 0)
            {
                this.canvas.Image = images[0];
            }
        }        private void timer_Tick(object sender, EventArgs e)
        {
            canvas.Image = images[(frameIndex++) % images.Count];
        }        private void LoadImages(string directoryName)
        {
            if (!Directory.Exists(directoryName))
                throw new FileNotFoundException();
            try
            {
                this.images = new List<Image>();
                DirectoryInfo dirinfo = new DirectoryInfo(directoryName);
                FileInfo[] files = dirinfo.GetFiles();
                for (int i = 0; i < files.Length; i++)
                {
                    foreach (string ext in EXTENSIONS)
                    {
                        if (files[i].Extension == "." + ext)
                        {
                            Image image = Image.FromFile(files[i].FullName);
                            this.images.Add(image);
                            break;
                        }
                    }
                }
            }
            catch (FileNotFoundException e)
            {
                throw e;
            }
        }        public void Play()
        {
            this.timer.Start();
        }        public void Stop()
        {
            this.timer.Stop();
        }
    }
}

Answer 3

public void Play()
{
    if(images.Count==0) return;
    this.timer.Start();
}