+| **WebRequestFilter** | string | No | Specifies the filter that specifies the resource request URLs for which the request will be intercepted and redirected to the widget provider's implementation of [IWidgetResourceProvider.OnResourceRequested](/windows/windows-app-sdk/api/winrt/microsoft.windows.widgets.providers.iwidgetresourceprovider.onresourcerequested). The filter pattern is expressed using the format described in [Match Patterns](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Match_patterns). The filter string in the registration must use [Punycode](https://en.wikipedia.org/wiki/Punycode) where necessary. The filter string must match the origin of the widget registration, which is specified in the *webUrl* field of the adaptive card content. | N/A |
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