private void btnRefresh_Click(object sender, EventArgs e) { _musicCollection = _client.GetSongs(); _musicCollection.Sort(); lbArtists.Items.Clear(); lbAlbums.Items.Clear(); lbSongs.Items.Clear(); for(int i = 0; i < _musicCollection.Artists.Count; i++) { lbArtists.Items.Add(_musicCollection.Artists[i].Name); } }