WINUI3对话框报错System.ArgumentException:“Value does not fall within the expected range.”

问题遇到的现象和发生背景

如上图所示的代码中，一运行点按钮后就会报错：System.ArgumentException:“Value does not fall within the expected range.”

问题相关代码，请勿粘贴截图

using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Controls.Primitives;
using Microsoft.UI.Xaml.Data;
using Microsoft.UI.Xaml.Input;
using Microsoft.UI.Xaml.Media;
using Microsoft.UI.Xaml.Navigation;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;

// To learn more about WinUI, the WinUI project structure,
// and more about our project templates, see: http://aka.ms/winui-project-info.

namespace ACSMaid
{
    /// <summary>
    /// An empty window that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.InitializeComponent();
        }

        private void myButton_Click(object sender, RoutedEventArgs e)
        {
            myButton.Content = "Clicked";
            //ClientModel clientModel = new ClientModel();
            //clientModel.StarUp();
            DisplayNoWifiDialog();
        }

        private async void DisplayNoWifiDialog()
        {
            ContentDialog noWifiDialog = new ContentDialog
            {
                Title = "No wifi connection",
                Content = "Check your connection and try again.",
                CloseButtonText = "Ok"
            };

            ContentDialogResult result = await noWifiDialog.ShowAsync();
        }
    }
}

请加入“contentDialog.XamlRoot = this.Content.XamlRoot”

 
var contentDialog = new ContentDialog()
{
    Content = new Content("This is a transparent ContentDialog."),
    PrimaryButtonText = "确定",
};
contentDialog.XamlRoot = this.Content.XamlRoot;

var contentDialog = new ContentDialog()
{
    Content = new Content("This is a transparent ContentDialog."),
    PrimaryButtonText = "确定",
    FullSizeDesired = false
};