public static void WrtieAllBook(int index = 1)
{
for (int i = 0; i < COUNT; i++)
{
Book b = GetBook(i);
using (BookDao dao = new BookDao())
dao.add(b);
}
}
public static void WrtieBook(int index)
{
Book b = GetBook(index);
using (BookDao dao = new BookDao())
dao.add(b);
}