private void DeletePlat() { try { _menuBusiness.DeletePlatfromMenu(SelectedMenu, SelectedPlat); _collectionPlatOfSelectedMenu.Clear(); _collectionProduitOfSelectedPlat.Clear(); foreach (Plat plat in _platBusiness.GetPlatByMenu(SelectedMenu)) { _collectionPlatOfSelectedMenu.Add(plat); } } catch (Exception ex) { DialogService.ShowErrorWindow(ex.Message); } }