public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
ViewData["BookId"] = new SelectList(_context.Book, "Id", "Title");
ViewData["PatronId"] = new SelectList(_context.Patron, "Id", "Name");
return(Page());
}
_context.Attach(Reservation).State = EntityState.Modified;
try {
await _context.SaveChangesAsync();
} catch (DbUpdateConcurrencyException) {
if (!ReservationExists(Reservation.Id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Attach(Book).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!BookExists(Book.Id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToPage("./Index"));
}