BackgroundWorker改变WPF进度条值

最新推荐文章于 2025-06-16 17:13:01 发布

wyyx000

最新推荐文章于 2025-06-16 17:13:01 发布

阅读量746

点赞数

CC 4.0 BY-SA版权

分类专栏： c#

本文链接：https://blog.youkuaiyun.com/wyyx000/article/details/49276885

这篇博客介绍了如何在WPF应用中利用BackgroundWorker组件进行异步操作，并实时更新进度条的值。通过在DoWork事件中报告进度，在ProgressChanged事件中改变进度条的值，实现了后台任务执行期间的进度反馈。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

 public partial class UpdateWindow
{
        private BackgroundWorker _work=new BackgroundWorker();

        /// <summary>
        /// 构造函数
        /// </summary>
        public UpdateWindow()
        {
            _work.DoWork += new DoWorkEventHandler(doWorkExecute);
            _work.ProgressChanged += new ProgressChangedEventHandler(_work_ProgressChanged);
            _work.RunWorkerCompleted += new RunWorkerCompletedEventHandler(_work_RunWorkerCompleted);
            _work.RunWorkerAsync();//开始执行后台操作 
            _work.WorkerSupportsCancellation = true;
            _work.WorkerReportsProgress = true;
        }

        private BackgroundWorker worker = null;
		private int count=100;
        public void doWorkExecute(object sender, DoWorkEventArgs e)
        {
           worker = sender as BackgroundWorker;
			for (int i = 0; i < count; i++)
			{
			   //执行异步dowork
				worker.ReportProgress((i+1) * 100 / count);//完成进度 
			}