public ActionResult Checkout(string Name, string Email, string Payment)
 {
     if (ModelState.IsValid)
     {
         Wishlist.Instance.Name  = Name;
         Wishlist.Instance.Email = Email;
         wishlistRepository.Checkout(Wishlist.Instance);
         return(PartialView("_PopupOrder", Wishlist.Instance));
     }
     return(RedirectToAction(nameof(Index)));
 }