Mvvm Cross Xamarin.iOS -如何将警报操作绑定到ViewModel？

private MvxCommand _showAlertCommand;
public ICommand ShowAlertCommand
{
    get
    {
        _showAlertCommand = _showAlertCommand ?? new MvxCommand(ShowAlert);
        return _showAlertCommand;
    }
}

private void ShowAlert()
{
    Mvx.Resolve<IMvxMainThreadDispatcher>().RequestMainThreadAction(() =>
    {
        // 在主线程上显示警报
        // 例如，可以使用Mvx.Resolve<IMvxUserInteraction>()来显示警报对话框
    });
}

var button = new UIButton();
button.SetTitle("Show Alert", UIControlState.Normal);
button.TouchUpInside += (sender, e) =>
{
    if (ViewModel.ShowAlertCommand.CanExecute(null))
    {
        ViewModel.ShowAlertCommand.Execute(null);
    }
};