【C#】Winform实现轮播图

复制后，需要修改的代码：

1、图片文件夹路劲：string folderPath = "C:\\Users\\Administrator\\Desktop\\images";

2、项目命名空间：namespace BuildAction

全窗口代码：

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;
using System.IO;
using System.Threading;


namespace BuildAction
{
    public partial class Form1 : Form
    {
        private string[] imageFiles;       // 存储图片文件路径
        private int currentIndex = 0;      // 当前显示的图片索引
        private Thread rotateThread;       // 轮播线程

        public Form1()
        {
            InitializeComponent();
        }

        private void StartRotate()
        {
            // 读取指定文件夹下的所有图片
            string folderPath = "C:\\Users\\Administrator\\Desktop\\images";
            imageFiles = Directory.GetFiles(folderPath, "*.png", SearchOption.TopDirectoryOnly);
            rotateThread = new Thread(() =>
            {
                while (true)
                {
                    // 显示下一张图片
                    currentIndex = (currentIndex + 1) % imageFiles.Length;
                    this.Invoke(new Action(() =>
                    {
                        pictureBox1.Image = Image.FromFile(imageFiles[currentIndex]);
                    }));

                    // 等待 2 秒后切换图片
                    Thread.Sleep(2000);
                }
            });
            rotateThread.IsBackground = true;
            rotateThread.Start();
        }

        private void StopRotate()
        {
            if (rotateThread != null && rotateThread.IsAlive)
            {
                rotateThread.Abort();
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // 开始轮播
            StartRotate();
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            StopRotate();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("测试多线程是否堵塞", "提醒");
        }
    }
}