private void btnCancelWaitingReturn_Click(object sender, System.Windows.RoutedEventArgs e)
{
var vm = this.DataContext as RegisterVM;
facade.CancelWaitingReturn(vm.SysNo.Value, (obj, args) =>
{
vm.BasicInfo.ReturnStatus = null;
SetButtonStatus();
Window.Alert(ResRegisterMaintain.Info_OperateSuccessfully);
});
}