public async Task <IActionResult> OnPostFilterSortAsync()
{
Guests = await _guestService.GetGuestsByName(FilterCriteria);
switch (SortCriteria)
{
case "Number":
Guests = (from guest in Guests orderby guest.GuestNo select guest).ToList();
break;
case "Name":
Guests = (from guest in Guests orderby guest.Name select guest).ToList();
break;
case "Address":
Guests = (from guest in Guests orderby guest.Address select guest).ToList();
break;
}
if (!SortAscending)
{
Guests.Reverse();
}
return(Page());
}