public async Task <IActionResult> OnPostAsync(int?id)
        {
            if (id == null)
            {
                return(NotFound());
            }

            CategorieFilm = await _context.CategorieFilm.FindAsync(id);

            if (CategorieFilm != null)
            {
                _context.CategorieFilm.Remove(CategorieFilm);
                await _context.SaveChangesAsync();
            }

            return(RedirectToPage("./Index"));
        }
        public async Task <IActionResult> OnGetAsync(int?id)
        {
            if (id == null)
            {
                return(NotFound());
            }

            CategorieFilm = await _context.CategorieFilm
                            .Include(c => c.Categorie)
                            .Include(c => c.Film).FirstOrDefaultAsync(m => m.ID == id);

            if (CategorieFilm == null)
            {
                return(NotFound());
            }
            return(Page());
        }
        public async Task <IActionResult> OnGetAsync(int?id)
        {
            if (id == null)
            {
                return(NotFound());
            }

            CategorieFilm = await _context.CategorieFilm
                            .Include(c => c.Categorie)
                            .Include(c => c.Film).FirstOrDefaultAsync(m => m.ID == id);

            if (CategorieFilm == null)
            {
                return(NotFound());
            }
            ViewData["CategorieID"] = new SelectList(_context.Set <Categorie>(), "ID", "ID");
            ViewData["FilmID"]      = new SelectList(_context.Film, "ID", "ID");
            return(Page());
        }