public async Task <ActionResult <BookBinding> > PostBookBinding(BookBinding bookBinding)
{
_context.bookBinding.Add(bookBinding);
await _context.SaveChangesAsync();
return(CreatedAtAction("GetBookBinding", new { id = bookBinding.BookBindingId }, bookBinding));
}
public async Task <IActionResult> PutBookBinding(int id, BookBinding bookBinding)
{
if (id != bookBinding.BookBindingId)
{
return(BadRequest());
}
_context.Entry(bookBinding).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!BookBindingExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(NoContent());
}
private static void Main()
{
var binding = BookBinding.Hardcover;
// NOTE: Преобразование перечисления в целое (и обратно)
var book = BookLanguage.English;
const int value = (int)BookLanguage.English;
Console.WriteLine("Integer value of BookLanguage.English is {0}", value);
// NOTE: Проверка допустимости значений перечисления при обратном преобразовании
const BookBinding badBinding = (BookBinding)9999;
var isDefined = Enum.IsDefined(typeof(BookBinding), badBinding);
Console.WriteLine("isDefined: {0}", isDefined);
Console.Write("Press any key to continue...");
Console.ReadKey(true);
}
public async Task <IActionResult> FindByName([FromBody] BookBinding BookBinding)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var Book = await _context.Books.FirstOrDefaultAsync(m => m.BookName == BookBinding.Name);
_context.Entry(Book).Navigation("Author").Load();
if (Book == null)
{
return(NotFound());
}
return(Ok(Book));
}
static void Main(string[] args)
{
// Перечисления, не помеченные атрибутом Flags
const BookBinding binding = BookBinding.Hardcover;
const BookBinding doubleBinding = BookBinding.Hardcover | BookBinding.Paperback;
Console.WriteLine("Binding: {0}", binding);
Console.WriteLine("Double Binding: {0}", doubleBinding); // 3
// Перечисления, помеченные атрибутом Flags
const BookGenres genres = BookGenres.Vampire | BookGenres.Fantasy | BookGenres.Romance;
Console.WriteLine("Genres: {0}", genres); // Ok
// NOTE: Выяснение, установлен ли флаг
const BookGenres bookGenres = BookGenres.Vampire | BookGenres.Fantasy;
//bool isVampire = ((bookGenres & BookGenres.Vampire) != 0);
bool isVampireAlt = bookGenres.HasFlag(BookGenres.Vampire); // Вариант для .NET 4+
Console.WriteLine(isVampireAlt);
Console.ReadKey();
}
