WebView.FrameNavigationStarting 事件

定义

命名空间:

Windows.UI.Xaml.Controls

在 WebView 中的框架导航到新内容之前发生。

// Register
event_token FrameNavigationStarting(TypedEventHandler<WebView, WebViewNavigationStartingEventArgs const&> const& handler) const;

// Revoke with event_token
void FrameNavigationStarting(event_token const* cookie) const;

// Revoke with event_revoker
WebView::FrameNavigationStarting_revoker FrameNavigationStarting(auto_revoke_t, TypedEventHandler<WebView, WebViewNavigationStartingEventArgs const&> const& handler) const;

public event TypedEventHandler<WebView,WebViewNavigationStartingEventArgs> FrameNavigationStarting;

function onFrameNavigationStarting(eventArgs) { /* Your code */ }
webView.addEventListener("framenavigationstarting", onFrameNavigationStarting);
webView.removeEventListener("framenavigationstarting", onFrameNavigationStarting);
- or -
webView.onframenavigationstarting = onFrameNavigationStarting;

Public Custom Event FrameNavigationStarting As TypedEventHandler(Of WebView, WebViewNavigationStartingEventArgs) 

<WebView FrameNavigationStarting="eventhandler"/>

事件类型

TypedEventHandler<WebView,WebViewNavigationStartingEventArgs>

注解

可以通过将 WebViewNavigationStartingEventArgs.Cancel 属性设置为 true 来取消此事件的处理程序中的导航。

WebView 导航事件按以下顺序发生：

• NavigationStarting
• ContentLoading
• DOMContentLoaded
• NavigationCompleted

对于 WebView 内容中的每个 iframe，类似事件按相同的顺序发生：

• FrameNavigationStarting
• FrameContentLoading
• FrameDOMContentLoaded
• FrameNavigationCompleted

另请参阅

• WebViewNavigationStartingEventArgs