private void SetToggleButtonState()
 {
     if (selectedPageRange.Contains((int)renderedPageNumber))
     {
         CurrentPageSelectButton.IsChecked = true;
     }
     else
     {
         CurrentPageSelectButton.IsChecked = false;
     }
 }
 public bool CanSeeLastPage()
 {
     return(PageRange.Contains(PageCount));
 }
 public bool CanSeeFirstPage()
 {
     return(PageRange.Contains(1));
 }