private void Form1_Load(object sender, EventArgs e)
{
ran = new Random();
subjectWithEvent = new CustomControlSubject();
inst_1 = new CustomControlObserver(subjectWithEvent, btn1, ran);
inst_2 = new CustomControlObserver(subjectWithEvent, btn1, ran);
}
public CustomControlObserver(CustomControlSubject subject, Button btn, Random ran)
{
this.ran = ran;
code = ran.Next(100);
this.subject = subject;
this.btn = btn;
CustomControlSubject.ControlEventHandler handler = new CustomControlSubject.ControlEventHandler(CustomHandlerMethod);
subject.CustomEvent += handler;
}