public IActionResult OnGet()
        {
            ViewData["RecordID"] = new SelectList(_context.Set <Record>(), "ID", "RecordName");
            var Album = new Album();

            Album.AlbumCategories = new List <AlbumCategory>();
            PopulateAssignedCategoryData(_context, Album);
            return(Page());
        }
        public async Task <IActionResult> OnGetAsync(int?id)
        {
            if (id == null)
            {
                return(NotFound());
            }

            Album = await _context.Album
                    .Include(b => b.Record)
                    .Include(b => b.AlbumCategories).ThenInclude(b => b.Category)
                    .AsNoTracking()
                    .FirstOrDefaultAsync(m => m.ID == id);

            if (Album == null)
            {
                return(NotFound());
            }
            PopulateAssignedCategoryData(_context, Album);

            ViewData["RecordID"] = new SelectList(_context.Set <Record>(), "ID", "RecordName");

            return(Page());
        }