WebView.NavigationStarting Event

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

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

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

public event TypedEventHandler<WebView,WebViewNavigationStartingEventArgs> NavigationStarting;

function onNavigationStarting(eventArgs) { /* Your code */ }
webView.addEventListener("navigationstarting", onNavigationStarting);
webView.removeEventListener("navigationstarting", onNavigationStarting);
- or -
webView.onnavigationstarting = onNavigationStarting;

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

<WebView NavigationStarting="eventhandler" />

Event Type

Examples

The following code example demonstrates how to handle this event to update a text box used as an address bar. For the complete example, see the XAML WebView control sample.

void webViewA_NavigationStarting(WebView sender, WebViewNavigationStartingEventArgs args)
{
 string url = "";
 try { url = args.Uri.ToString(); }
 finally
 {
 address.Text = url;
 appendLog(String.Format("Starting navigation to: \"{0}\".\n", url));
 pageIsLoading = true;
 }
}

Remarks

You can cancel navigation in a handler for this event by setting the WebViewNavigationStartingEventArgs.Cancel property to true.

WebView navigation events occur in the following order:

• NavigationStarting
• ContentLoading
• DOMContentLoaded
• NavigationCompleted

Similar events occur in the same order for each iframe in the WebView content:

• FrameNavigationStarting
• FrameContentLoading
• FrameDOMContentLoaded
• FrameNavigationCompleted

See also

• WebViewNavigationStartingEventArgs
• XAML WebView control sample