public async Task DeleteAsync(string genre)
{
var dbGenre = await _context.Genres
.Include(x => x.AlbumGenres)
.Include(x => x.ArtistGenres)
.SingleOrDefaultAsync(x => x.Name == genre);
_context.RemoveRange(dbGenre.ArtistGenres);
_context.RemoveRange(dbGenre.AlbumGenres);
_context.Remove(dbGenre);
await _context.SaveChangesAsync();
}
