public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Attach(Author).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!AuthorExists(Author.ID))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Author.Add(Author);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (id == null)
{
return(NotFound());
}
Author = await _context.Author.FindAsync(id);
if (Author != null)
{
_context.Author.Remove(Author);
await _context.SaveChangesAsync();
}
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (id == null)
{
return(NotFound());
}
Book = await _context.Book
.AsNoTracking()
.FirstOrDefaultAsync(m => m.ID == id);
if (Book != null)
{
_context.Book.Remove(Book);
await _context.SaveChangesAsync();
}
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (!ModelState.IsValid)
{
return(Page());
}
var bookToUpdate = await _context.Book.FindAsync(id);
if (await TryUpdateModelAsync <Book>(
bookToUpdate,
"book",
b => b.Title, b => b.AuthorID, b => b.Language, b => b.PublishYear, b => b.Publisher, b => b.Subject, b => b.DeweyNumber, b => b.DateAcquired))
{
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
PopulateAuthorsDropDownList(_context, bookToUpdate.AuthorID);
return(Page());
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
var emptyBook = new Book();
if (await TryUpdateModelAsync <Book>(
emptyBook,
"book",
s => s.ID, s => s.AuthorID, s => s.Title, s => s.PublishYear))
{
_context.Book.Add(emptyBook);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
PopulateAuthorsDropDownList(_context, emptyBook.AuthorID);
return(Page());
}
