如何才能在不收到错误消息的情况下将ContentDialog添加到XAML？

private async void AddContentDialog(object sender, RoutedEventArgs e)
{
    ContentDialog dialog = new ContentDialog();
    // 设置ContentDialog的内容、标题、按钮等属性
    dialog.Title = "Dialog Title";
    dialog.Content = "Dialog Content";
    dialog.PrimaryButtonText = "OK";
    dialog.SecondaryButtonText = "Cancel";

    ContentDialogResult result = await dialog.ShowAsync();
    // 处理ContentDialog的返回结果
    if (result == ContentDialogResult.Primary)
    {
        // 用户点击了Primary按钮
    }
    else if (result == ContentDialogResult.Secondary)
    {
        // 用户点击了Secondary按钮
    }
}