C# 错误：“您需要调用RxApp.ConfigureServiceLocator来设置服务位置”

以下代码在问题标题中提供了运行时错误。不过，当我在MainWindow构造函数中注释掉OneWayBind调用时，应用程序运行时不会出错。有什么想法吗

窗户

视图模型

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非常感谢你！我只希望ReactiveUI4.5.0有当前的WPF实现示例！它们都过时了六个月甚至更长

您的项目中是否有对ReactiveUI.Xaml的引用？谢谢您，Paul。NuGet表示已安装并正确引用了ReactiveUI.Xaml。我通过NuGet卸载并重新安装ReactiveUI纠正了这个问题。

public partial class MainWindow : Window, IViewFor<MainViewModel>
{
    public MainWindow()
    {
        ViewModel = new MainViewModel();

        InitializeComponent();

        this.OneWayBind(ViewModel, x => x.ContentItems, x => x.panelDemo.ItemsSource);
    }

    public MainViewModel ViewModel
    {
        get { return (MainViewModel)GetValue(ViewModelProperty); }
        set { SetValue(ViewModelProperty, value); }
    }
    public static readonly DependencyProperty ViewModelProperty =
        DependencyProperty.Register("ViewModel", typeof(MainViewModel), typeof(MainWindow), new PropertyMetadata(null));

    object IViewFor.ViewModel
    {
        get { return ViewModel; }
        set { ViewModel = (MainViewModel)value; }
    }
}

public class ContentItem
{
    public BitmapImage Image { get; set; }
    public string Name { get; set; }
}

public class MainViewModel : ReactiveObject
{
    string _Directory;
    public string Directory
    {
        get { return _Directory; }
        set { this.RaiseAndSetIfChanged(x => x.Directory, value); }
    }

    bool _IsBusy;
    public bool IsBusy
    {
        get { return _IsBusy; }
        set { this.RaiseAndSetIfChanged(x => x.IsBusy, value); }
    }

    ObservableAsPropertyHelper<IList<ContentItem>> _ContentItems;
    public IList<ContentItem> ContentItems
    {
        get { return _ContentItems.Value; }
    }

    public MainViewModel()
    {
        this.WhenAny(x => x.Directory, x => x.Value)
            .Do(_ => IsBusy = true)
            .Select(GetImages)
            .Do(_ => IsBusy = false);
    }

    IObservable<IList<ContentItem>> GetImages(string directory)
    {
        return new DirectoryInfo(directory).GetFiles().ToList().ToObservable()
            .Select(x => new ContentItem
            {
                Image = new BitmapImage(new Uri(x.FullName)),
                Name = x.Name
            }).ToList();
    }
}