private async void SavePlaylist() { string coverPlaylist = ""; if (absolutePathCover != null) { coverPlaylist = Utils.Encoder.EncodeBase64(absolutePathCover); } Playlist playlist = new Playlist() { cover = coverPlaylist, idAccount = idAccount, idPlaylistType = 4, title = TextBox_title_playlist.Text, publicPlaylist = IsPublicPlaylist() }; try { var response = await PlaylistRepository.CreatePlaylistAsync(playlist); if (response) { MessageBox.Show("Playlist has been created"); Window.GetWindow(this).Close(); } } catch (Exception ex) { MessageBox.Show(ex.Message); } }