protected virtual void OnCheckChanged(CheckChangedEventArgs args)
{
EventHandler<CheckChangedEventArgs> handler = base.Events[EventCheckChanged] as EventHandler<CheckChangedEventArgs>;
if (handler != null) {
handler(this, args);
}
}
private void AssositeButtonOnCheckChanged(object sender, CheckChangedEventArgs e)
{
this.on = e.Checked;
this.Invalidate();
}