如何在WPF中实现Tab页面控件的延迟绑定？

// ViewModel.cs
public class ViewModel : INotifyPropertyChanged
{
    private string _tabContent;
    
    public string TabContent
    {
        get { return _tabContent; }
        set
        {
            _tabContent = value;
            OnPropertyChanged(nameof(TabContent));
        }
    }
    
    public async Task LoadTabContentAsync()
    {
        // 模拟延迟加载
        await Task.Delay(1000);
        
        // 加载Tab页面的内容
        TabContent = "Tab页面的内容";
    }
    
    // 实现INotifyPropertyChanged接口的代码略
}

// MainWindow.xaml.cs
public partial class MainWindow : Window
{
    private ViewModel _viewModel;
    
    public MainWindow()
    {
        InitializeComponent();
        
        _viewModel = new ViewModel();
        DataContext = _viewModel;
        
        Loaded += MainWindow_Loaded;
    }
    
    private async void MainWindow_Loaded(object sender, RoutedEventArgs e)
    {
        // 在窗口加载时异步加载Tab页面的内容
        await _viewModel.LoadTabContentAsync();
    }
}

<!-- MainWindow.xaml -->
<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApp"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <TabControl>
            <TabItem Header="Tab 1">
                <TextBlock Text="{Binding TabContent}" />
            </TabItem>
            <TabItem Header="Tab 2">
                <!-- 延迟加载的内容 -->
            </TabItem>
        </TabControl>
    </Grid>
</Window>