private void movieComboBox_SelectedIndexChanged(object sender, EventArgs e) { ClearScreeningsHolder(); this._movieName = this.movieComboBox.SelectedItem.ToString(); var screenings = ScreeningService.GetScreeningsByTownCinemaAndMovie(this._townName, this._cinemaName, this._movieName); this._screenings = screenings.ToList(); RenderScreeningsHolder(); }