public async Task <IActionResult> Edit(int id, [Bind("ID,Title,AuthorID,LanguageID")] Book book)
{
if (book.ID != id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(book);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!BookExists(book.ID))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
ViewBag.Languages = new SelectList(_context.Languages.AsNoTracking(), "ID", nameof(Language.Name), book.LanguageID);
ViewBag.Authors = new SelectList(_context.Authors.AsNoTracking(), "ID", nameof(Author.Name), book.AuthorID);
return(View(book));
}
public async Task <IActionResult> Edit(int id, [Bind("ID,Name")] Author author)
{
if (author.ID != id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(author);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
//Log the error (uncomment ex variable name and write a log.)
ModelState.AddModelError("", "Unable to save changes. " +
"Try again, and if the problem persists, " +
"see your system administrator.");
}
return(RedirectToAction(nameof(Index)));
}
return(View(author));
}
public async Task <IActionResult> Edit(int id, [Bind("ID,Name")] Language language)
{
if (language.ID != id)
{
return(NotFound());
}
if (await TryUpdateModelAsync <Language>(language, nameof(language),
l => l.Name))
{
try
{
_context.Update(language);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!LanguageExists(language.ID))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
return(View(language));
}