在Windows窗体上的较长过程中显示动画

using System;
using System.Threading;
using System.Windows.Forms;

namespace WindowsFormsApp
{
    public partial class MainForm : Form
    {
        private Thread animationThread;

        public MainForm()
        {
            InitializeComponent();
        }

        private void StartAnimation()
        {
            animationThread = new Thread(() =>
            {
                while (true)
                {
                    // 更新进度条的值
                    progressBar.Invoke(new Action(() =>
                    {
                        progressBar.Value = (progressBar.Value + 1) % (progressBar.Maximum + 1);
                    }));

                    // 等待一段时间，模拟耗时操作
                    Thread.Sleep(100);
                }
            });

            animationThread.Start();
        }

        private void StopAnimation()
        {
            animationThread?.Abort();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            StartAnimation();
        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            StopAnimation();
        }
    }
}