public void ShowPopup()
 {
     UserNameInputBox.SetText("");
     PasswordInputBox.SetText("");
     CaptchaBlock.Visibility = Visibility.Collapsed;
     WebContainer.Visibility = Visibility.Collapsed;
     BackupWebView.NavigateToString("");
     UIHelper.PopupShow(this);
     PopupIn.Begin();
 }
        private async void BackupWebView_NavigationCompleted(WebView sender, WebViewNavigationCompletedEventArgs args)
        {
            if (args.Uri == null)
            {
                return;
            }
            if (args.Uri.AbsoluteUri == "https://passport.bilibili.com/ajax/miniLogin/redirect")
            {
                var results = await BiliTool.GetTextFromWebAsync("https://passport.bilibili.com/login/app/third?appkey=27eb53fc9058f8c3&api=http%3A%2F%2Flink.acg.tv%2Fforum.php&sign=67ec798004373253d60114caaad89a8c", true);

                var obj = JObject.Parse(results);
                if (Convert.ToInt32(obj["code"].ToString()) == 0)
                {
                    BackupWebView.Navigate(new Uri(obj["data"]["confirm_uri"].ToString()));
                }
                else
                {
                    new TipPopup("登陆失败,请重试").ShowError();
                }
            }
        }
        private async void BackupWebView_NavigationStarting(WebView sender, WebViewNavigationStartingEventArgs args)
        {
            if (args.Uri == null)
            {
                return;
            }
            if (args.Uri.AbsoluteUri.Contains("access_key="))
            {
                var access = Regex.Match(args.Uri.AbsoluteUri, "access_key=(.*?)&").Groups[1].Value;
                await App.BiliViewModel._client.Account.SetLoginStatusAsync(access);

                await App.BiliViewModel.GetMeAsync();

                HidePopup();
            }
            try
            {
                BackupWebView.AddWebAllowedObject("biliapp", App.BiliViewModel._webClient);
                BackupWebView.AddWebAllowedObject("secure", App.BiliViewModel._secure);
            }
            catch (Exception)
            {
            }
        }