将可见性绑定到ReactiveCommand CanExecute

Question

我的xaml中有几个Tiles(TileLayoutControl类)(本例中只显示了2个),其可见性绑定到布尔属性并通过BooleanToVisibilityConverter转换.
这很好用.我的问题是

我可以将可见性绑定到Command,以便我可以删除那些几个布尔属性的需要吗？

类似于将Visibility绑定到Command.CanExecute的东西

如果是,我该如何实现？任何帮助将非常感谢!谢谢.

<dxlc:Tile Command="{Binding Tile1Command}"
           Visibility="{Binding Path=IsTile1Visible , Converter={StaticResource BooleanToVisibilityConverter}}"/>
<dxlc:Tile Command="{Binding Tile2Command}"
           Visibility="{Binding Path=IsTile2Visible , Converter={StaticResource BooleanToVisibilityConverter}}"/>

视图模型

private bool _isTile1Visible;
public bool IsTile1Visible
{
    get { return _isTile1Visible; }
    set { this.RaiseAndSetIfChanged(ref _isTile1Visible, value); }
}

public ReactiveCommand Tile1Command { get; private set; }

Tile1Command = new ReactiveCommand();
Tile1Command.Subscribe(p => PerformTile1Operation());

Answer 1

是的,只需使用RxUI绑定:

<dxlc:Tile x:Name="Tile1" />

然后在你的View构造函数中(确保实现IViewFor<Tile1ViewModel>以获得此扩展):

this.BindCommand(ViewModel, x => x.Tile1Command);

this.WhenAnyObservable(x => x.ViewModel.Tile1Command.CanExecuteObservable)
    .BindTo(this, x => x.Tile1.Visibility);

您也可以在ViewModel级别解决此问题,尽管这不是我要做的 - 在ViewModel ctor中:

Tile1Command = new ReactiveCommand(/* ... */);
Tile1Command
    .Select(x => x ? Visibility.Visible : Visibility.Collapsed)
    .ToProperty(this, x => x.Tile1Visibility, out tile1Visibility);