public SupplierEditViewModel(ISupplierController controller, IView view) : base(controller, view)
 {
     controller.Messenger.Register(MessageTypes.MSG_SUPPLIER_SELECTED_FOR_EDIT,
         new Action<Message>(HandleSupplierSelectedForEditMessage));
 }
        public SupplierSelectionViewModel(ISupplierController controller, string cityFilter = "")
            :this(controller, null, cityFilter)
        {

        }
        public SupplierEditViewModel(ISupplierController controller) : this(controller, null)
        {

        }