private void Form1_Load(object sender, EventArgs e)
{
subjectWithEvent = new ProgressSubject();
TrackBar = new ProgressObserver(subjectWithEvent, null, trackBar1, null);
ProgressBar = new ProgressObserver(subjectWithEvent, null, null, progressBar1);
UpDown = new ProgressObserver(subjectWithEvent, numericUpDown1, null, null);
}
public ProgressObserver(ProgressSubject subject, NumericUpDown updown, TrackBar bar, ProgressBar pbar)
{
this.updown = updown;
this.bar = bar;
this.pbar = pbar;
this.subject = subject;
ProgressSubject.ProgressEventHandler handler = new ProgressSubject.ProgressEventHandler(ProgressHandlerMethod);
subject.progressEvent += handler;
}