// To protect from overposting attacks, enable the specific properties you want to bind to, for
// more details, see https://aka.ms/RazorPagesCRUD.
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
ViewData["PublisherID"] = new SelectList(_context.Set <Publisher>(), "ID", "PublisherName");
return(Page());
}
_context.book.Add(book);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnGetAsync(int?id)
{
if (id == null)
{
return(NotFound());
}
book = await _context.book.FirstOrDefaultAsync(m => m.ID == id);
if (book == null)
{
return(NotFound());
}
ViewData["PublisherID"] = new SelectList(_context.Set <Publisher>(), "ID", "PublisherName");
return(Page());
}