public void OnGet(bool?isNext = null)
{
if (isNext == null)
{
PageIndex = 1;
}
else
{
PageIndex = isNext.Value ? PageIndex + 1 : PageIndex - 1;
if (PageIndex < 1)
{
PageIndex = 1;
}
}
AdsToDisplay = _adsService.GetAdsByPage(PageIndex);
if (AdsToDisplay.Count == 0)
{
PageIndex = PageIndex > 1 ? --PageIndex : 1;
AdsToDisplay = _adsService.GetAdsByPage(PageIndex);
}
}