public ActivitesVacancier() { InitializeComponent(); richTBDescAnimation.ReadOnly = true; lbNomAnim.Text = tmpAnimation.Nom; richTBDescAnimation.Text = tmpAnimation.Description; listBActivites.Text = tmpAnimation.Description; List <Activite> listeActivites = Donnees.GetLesActivitesPourUneAnimation(tmpAnimation); listBActivites.Items.AddRange(listeActivites.ToArray()); if (listBActivites.Items.Count == 0) { string msg = "Aucune activité n'existe pour l'animation " + tmpAnimation.Code; listBActivites.Items.Add(msg); } }