当 URL 无效时，UWP Webview NavigationStarting 事件处理程序不起作用 [英] UWP Webview NavigationStarting event handler is not working when URL is not Valid

问题描述

订阅EvenHandler:

wv.NavigationStarting += webView_NavigationStarting;

EvenHandler 实现

private static void webView_NavigationStarting(object sender, WebViewNavigationStartingEventArgs args)
{
    var url = args.Uri.AbsoluteUri.Substring(args.Uri.AbsoluteUri.LastIndexOf("/") + 1);
    int parameterCount = url.Split('_').Length;
}

当 URL 有效时，它可以完美导航，否则不会调用 EvenHandler.

When URL is valid it navigates perfectly fine, otherwise EvenHandler was not called.

下面的弹出窗口显示:

推荐答案

您可以使用 WebView.UnsupportedUriSchemeIdentified 处理未知 uri 的事件.

You can use the WebView.UnsupportedUriSchemeIdentified event to handle unknown uri's.

private void webView_OnUnsupportedUriSchemeIdentified(WebView sender, WebViewUnsupportedUriSchemeIdentifiedEventArgs args)
{
    args.Handled = true;

    // up to you what to do with args.Uri
}

请注意，如果链接无效，将改为引发 WebView.NavigationFailed！

Be aware that if the link is invalid, the WebView.NavigationFailed will be raised instead!

这篇关于当 URL 无效时，UWP Webview NavigationStarting 事件处理程序不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！