public static async Task<bool> deleteListGroupContact(List<CMData.GroupContact> listSelected) { if (listSelected == null || listSelected.Count() < 1) return false; var dbController = new CMController.DatabaseController(); var msg = UC_AddressBook.ResourcesStringLoader.GetString("DIALOG-Message-ask_remove_contact_from_group"); var valueReturn = await Dialogs.UIConfirmDialog.showConfirmDialog(msg); if (valueReturn == 1) { return dbController.RemoveGroupContactList(listSelected); } return false; }