如何在WPF中使用RxUI交互

using ReactiveUI;

public class MainWindowViewModel : ReactiveObject
{
    private string _message;
    public string Message
    {
        get => _message;
        set => this.RaiseAndSetIfChanged(ref _message, value);
    }

    public ReactiveCommand<Unit, Unit> ShowMessageCommand { get; }

    public MainWindowViewModel()
    {
        ShowMessageCommand = ReactiveCommand.Create(ShowMessage);
    }

    private void ShowMessage()
    {
        Message = "Hello, RxUI!";
    }
}

<Window x:Class="WpfRxUIExample.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:rxui="http://reactiveui.net"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <StackPanel>
            <TextBlock Text="{Binding Message}" FontSize="20" HorizontalAlignment="Center" Margin="0,50"/>
            <Button Content="Show Message" Command="{Binding ShowMessageCommand}" 
                    HorizontalAlignment="Center" Margin="0,20"/>
        </StackPanel>
    </Grid>
</Window>

using System.Windows;

namespace WpfRxUIExample
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            var viewModel = new MainWindowViewModel();
            DataContext = viewModel;

            viewModel.ShowMessageCommand.Subscribe(_ =>
            {
                MessageBox.Show("Button Clicked!");
            });
        }
    }
}