Windows窗体应用程序中的进度栏 异常

Posted 2021-04-26

我正在尝试更新我的Windows窗体应用程序的进度条，这基本上是一个下载YouTube视频的应用程序。但是我在进度条方法上得到一个名为'System.ArgumentOutOfRangeException'的异常。请帮我解决这个问题。谢谢！ :)

private void button1_Click(object sender, EventArgs e)
    {
        progressBarOverall.Minimum = 0;
        progressBarOverall.Minimum = 100;
        IEnumerable<VideoInfo> videos = DownloadUrlResolver.GetDownloadUrls(textBox1.Text);
        VideoInfo video = videos.First(p => p.VideoType == VideoType.Mp4 && p.Resolution == Convert.ToInt32(cboResolution.Text));//converts video quality
        if(video.RequiresDecryption) //Checks if video requiures decryption before downloading the URL 
            DownloadUrlResolver.DecryptDownloadUrl(video);//
        VideoDownloader downloader = new VideoDownloader(video, Path.Combine(Application.StartupPath + "//", video.Title + video.VideoExtension));
        downloader.DownloadProgressChanged += Downloader_DownloadProgressChanged;
        Thread thread = new Thread(() => { downloader.Execute(); }) { IsBackground = true };
        thread.Start();
 }



private void Downloader_DownloadProgressChanged(object sender, ProgressEventArgs e)
    {

        Invoke(new MethodInvoker(delegate ()
        {
            progressBarOverall.Value = (int)e.ProgressPercentage;
            percentagelabel.Text = $"{string.Format("{0:0.##}", e.ProgressPercentage)}%";
            progressBarOverall.Update();
        }));
    }

答案

progressBarOverall.Minimum = 0;
progressBarOverall.Minimum = 100;

你的意思是第二个的最大值？

progressBarOverall.Minimum = 0;
progressBarOverall.Maximum= 100;