private void UnsubscribeButton_Click(object sender, EventArgs e)
{
if (active)
{
if (_selectedObserver != null)
{
foreach (ListViewItem item in SubscribedListView.SelectedItems)
{
Athlete athlete = item.Tag as Athlete;
athlete?.removeObserver(_selectedObserver);
_selectedObserver.ObservedAthleteList.Remove(athlete);
}
RefreshObserverListView();
RefreshListViews();
}
}
}