public static void deleteBook()
{
var externalFile = new ExternalFile();
List <Book> books = ExternalFile.getData();
findAllBooks();
Console.WriteLine("Please enter a book number");
var bookNum = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Details of the book you choose");
Console.WriteLine(books[bookNum - 1].getName() + ":" + books[bookNum - 1].getAuthor() + ":" + books[bookNum - 1].getGenre() + ":" + books[bookNum - 1].getType() + Environment.NewLine);
books.RemoveAt(bookNum - 1);
externalFile.writeAllBooks(books);
Console.WriteLine("********************************************************");
}
public static void editBook()
{
var externalFile = new ExternalFile();
List <Book> books = ExternalFile.getData();
findAllBooks();
var bookNum = InputCheck.CheckInteger("Please enter a book number : ", books.Count);
Console.WriteLine(Environment.NewLine + "Details of the book you choose");
Console.WriteLine(books[bookNum - 1].getName() + ":" + books[bookNum - 1].getAuthor() + ":" + books[bookNum - 1].getGenre() + ":" + books[bookNum - 1].getType());
Console.WriteLine(Environment.NewLine + "Enter new Book Author");
string editAuthor = Console.ReadLine();
books[bookNum - 1].setAuthor(editAuthor);
externalFile.writeAllBooks(books);
Console.WriteLine("Here is the updated Library\n");
Console.WriteLine("***************************\n");
findAllBooks();
}