C＃WebView2 Waithandle序列化几页的加载

Question

伙计们。我想通过WebView2从几页中抓取数据。我将要一一从页面中加载和提取数据。我编写了一些代码，但它们没有起作用。我被困。这是核心代码：

async Task Crawl()
{
    AutoResetEvent loadEvent = new AutoResetEvent(false);
    wv2.NavigationCompleted += Wv2_NavigationCompleted;

    foreach (var url in urls)
    {
        wv2.Source = new Uri(url);
        loadEvent.WaitOne();

        var data = await ExtractData();
        ...
    }

    wv2.NavigationCompleted -= Wv2_NavigationCompleted;
            
    void Wv2_NavigationCompleted(object sender, CoreWebView2NavigationCompletedEventArgs e)
    {
        loadEvent.Set();
    }
}