private void SetButtons()
{
btnCancel.Enabled = _currentPage.CanCancel();
btnPrevious.Enabled = _page > 0 && _currentPage.CanGoPrevious();
btnNext.Enabled = _page < _maxPages && _currentPage.CanGoNext();
btnFinish.Enabled = _page == _maxPages && _currentPage.CanGoFinish();
}
