gistfile1.txt

public class MainForm : Form
{
    private readonly YouTubeDownloadService _service = new YouTubeDownloadService();
    
    public class MainForm()
    {
        _serivce.DownloadProgressChanged += OnDownloadProgressChanged;
    }
    
    private void DownloadVideo(string videoLocation, VideoResolution resoloution, VideoCodec codec)
    {
        var video = service.FetchVideoInformation(videoLocation);
        if (video.IsAvailableWithResoloution(resoloution)) {
            MessageBox.Show("Video not available in this resoloution");
            return;
        }
        if (video.IsAvailableWithCodec(codec)) {
            MessageBox.Show("Video not available in this resoloution");
            return;
        }
        
        service.DownloadVideoAsync(
          video: video,
          path: "C:\Users\Alex\Desktop\video.mp4",
          resolution: VideoResolution._240p,
          codec: VideoCodec.MP4 
        ); 
    }
    
    private void OnDownloadProgressChanged(Video video, int progress)
    {
        var userControl = 
          videoListView.Controls.OfType<VideoItem>().FirstOrDefault(c => c.VideoLocation == video.VideoLocation);
        if (userControl != null)
        {
            userControl.ProgressBar.Progress = progress;
        }
    }
}