public static void AddGenre(Genre genre)
{
using (var db = new BookcaseDB())
{
db.Genres.Add(genre);
db.SaveChanges();
}
}
public static void DeleteBook(int bookId)
{
using (var db = new BookcaseDB())
{
db.Entry(new Book()
{
BookId = bookId
}).State = System.Data.Entity.EntityState.Deleted;
db.SaveChanges();
}
}
public static void AddBook(Book book)
{
using (var db = new BookcaseDB())
{
var entity = db.Books.Find(book.BookId);
if (entity == null)
{
db.Books.Add(book);
}
else
{
book.Genre = null;
db.Entry(entity).CurrentValues.SetValues(book);
}
db.SaveChanges();
}
}
