zj-Exercise/C#/WindowsFormsImageList/Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsImageList
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //以下两行代码用于获取第一张要加载的图片的路径
            string Path = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0, Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            Path += @"\01.jpg";

            string Path2 = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0, Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            Path2 += @"\02.jpg";

            //创建图像
            Image Mimg = Image.FromFile(Path, true);
            //只有创建图像后，才能通过Add方法来添加图像
            //通过图像类型Image的FromFile方法来加载Path路径，就获得了对应的图像对象
            imageList1.Images.Add(Mimg);
            //通过ImageList的Images属性，调用Add方法添加图片

            Image Mimg2 = Image.FromFile(Path2, true);//创建图像
            imageList1.Images.Add(Mimg2);

            //设置图像大小
            imageList1.ImageSize = new Size(200, 165);
            //初始化PictureBox控件的宽度和高度
            pictureBox1.Width = 200;
            pictureBox1.Height = 165;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //从ImageList中，通过Images属性以索引器的形式取出来
            pictureBox1.Image = imageList1.Images[0];
        }

        private void button2_Click(object sender, EventArgs e)
        {
            pictureBox1.Image = imageList1.Images[1];
        }
    }
}