public IActionResult OnGet(int?Id)
{
if (Id.HasValue)
{
Book = bookInMemory.GetBook(Id.Value);
Author = authorInMemory.GetAuthor(Id.Value);
if (Book == null)
{
return(RedirectToPage("/Books/ListBooks"));
}
}
else
{
Book = new Book();
}
FullNames = authorInMemory.GetAuthors().Select(x => new SelectListItem
{
Value = x.Id.ToString(),
Text = x.FullName
}).ToList();
return(Page());
}
public void OnGet()
{
Authors = authorInMemory.GetAuthors();
}