public async Task <IActionResult> Cat(int id, int page = 1)
{
Cat cat = await catRepo.GetByID(id);
ViewBag.Title = $"Loại: {cat?.Name}";
ViewBag.CatID = id;
ListPaging <Book> value = await bookRepo.tGetByCatPage(id, pageSize, page);
return(View("List", value));
}
