} //Команда удаления Customer //Метод удаления Customer из списка public void DeleteSelectedCommand(object p) { IList selectedItems = (IList)p; foreach (var customer in selectedItems.OfType <Organization>().ToArray()) { int deleteCustomer = DataBase.DeleteData <Customers>(customer.Id); if (deleteCustomer == 1) { OrganizationList.Remove(customer); } } }