WebView.UnsupportedUriSchemeIdentified WebView.UnsupportedUriSchemeIdentified WebView.UnsupportedUriSchemeIdentified WebView.UnsupportedUriSchemeIdentified Event

Definition

Occurs when an attempt is made to navigate to a Uniform Resource Identifier (URI) using a scheme that WebView doesn't support.

public : event TypedEventHandler UnsupportedUriSchemeIdentified<WebView, WebViewUnsupportedUriSchemeIdentifiedEventArgs>
// Register
event_token UnsupportedUriSchemeIdentified(TypedEventHandler<WebView, WebViewUnsupportedUriSchemeIdentifiedEventArgs> const& handler) const;

// Revoke with event_token
void UnsupportedUriSchemeIdentified(event_token const& cookie) const;

// Revoke with event_revoker
UnsupportedUriSchemeIdentified_revoker UnsupportedUriSchemeIdentified(auto_revoker_t, TypedEventHandler<WebView, WebViewUnsupportedUriSchemeIdentifiedEventArgs> const& handler) const;
public event TypedEventHandler UnsupportedUriSchemeIdentified<WebView, WebViewUnsupportedUriSchemeIdentifiedEventArgs>
Public Event TypedEventHandler UnsupportedUriSchemeIdentified(Of WebView, WebViewUnsupportedUriSchemeIdentifiedEventArgs)
<WebView UnsupportedUriSchemeIdentified="eventhandler"/>

Examples

<WebView x:Name="myWebView" UnsupportedUriSchemeIdentified="OnUnsupportedUriSchemeIdentified" /> 
private void OnUnsupportedUriSchemeIdentified (WebView sender, WebViewUnsupportedUriSchemeIdentifiedEventArgs e) 
{ 
    // Block all URIs from invoking other apps except the mailto: protocol. 
    if (e.Uri.Scheme != "mailto") 
    { 
        e.Handled= true; 
    } 
} 

Remarks

See WebViewUnsupportedUriSchemeIdentifiedEventArgs.

WebView supports navigation to Uniform Resource Identifier (URI) using these schemes: http, https, ms-appx-web, ms-appdata and ms-local-stream.

If an attempt is made to navigate to a Uniform Resource Identifier (URI) that the WebView doesn't support, the navigation is blocked. By default, when an unsupported Uniform Resource Identifier (URI) scheme is encountered, the launcher is invoked to find the default provider for the Uniform Resource Identifier (URI) scheme. You can handle the UnsupportedUriSchemeIdentified event to decide how to handle an unsupported Uniform Resource Identifier (URI) scheme. If you do nothing, the launcher is invoked. If you provide custom handling for the Uniform Resource Identifier (URI) scheme, set the Handled property to true to prevent the default provider for the Uniform Resource Identifier (URI) scheme from being invoked.

See Also