public bool InsertBookAuthor(BookAuthor bookAuthor)
 {
     BookAuthorHandler myHandler = new BookAuthorHandler(); return myHandler.InsertBookAuthor(bookAuthor);
 }
 public bool DeleteBookAuthor(BookAuthor bookAuthor)
 {
     BookAuthorHandler myHandler = new BookAuthorHandler(); return myHandler.DeleteBookAuthor(bookAuthor);
 }
 public List<BookAuthor> GetBookAuthors(int BookID)
 {
     BookAuthorHandler myHandler = new BookAuthorHandler(); return myHandler.GetBookAuthors(BookID);
 }
 public bool BookAuthorUpdateDelete(int BookID)
 {
     BookAuthorHandler myHandler = new BookAuthorHandler(); return myHandler.DeleteUpdateBookAuthor(BookID);
 }