CoreWebView2Settings Class

Defines properties that enable, disable, or modify WebView features. Changes to CoreWebView2Settings.IsGeneralAutofillEnabled and CoreWebView2Settings.IsPasswordAutosaveEnabled will take effect immediately, while other setting changes made after CoreWebView2.NavigationStarting event do not apply until the next top-level navigation.

Summary

Members	Description
AreBrowserAcceleratorKeysEnabled	Determines whether browser-specific accelerator keys are enabled.
AreDefaultContextMenusEnabled	Determines whether the default context menus are shown to the user in WebView.
AreDefaultScriptDialogsEnabled	Determines whether WebView renders the default JavaScript dialog box.
AreDevToolsEnabled	Determines whether the user is able to use the context menu or keyboard shortcuts to open the DevTools window.
AreHostObjectsAllowed	Determines whether host objects are accessible from the page in WebView.
HiddenPdfToolbarItems	Used to customize the PDF toolbar items.
HostObjectDispatchAdapter	The default adapter to be used when passing IInspectable objects to CoreWebView2.AddHostObjectToScript.
IsBuiltInErrorPageEnabled	Determines whether to disable built in error page for navigation failure and render process failure.
IsGeneralAutofillEnabled	Determines whether general form information will be saved and autofilled.
IsNonClientRegionSupportEnabled	The IsNonClientRegionSupportEnabled property enables web pages to use the
IsPasswordAutosaveEnabled	Determines whether password information will be autosaved.
IsPinchZoomEnabled	Determines the ability of the end users to use pinching motions on touch input enabled devices to scale the web content in the WebView2.
IsReputationCheckingRequired	Determines whether SmartScreen is enabled when visiting web pages
IsScriptEnabled	Determines whether running JavaScript is enabled in all future navigations in the WebView.
IsStatusBarEnabled	Determines whether the status bar is displayed.
IsSwipeNavigationEnabled	Determines whether the end user to use swiping gesture on touch input enabled devices to navigate in WebView2.
IsWebMessageEnabled	Determines whether communication from the host to the top-level HTML document of the WebView is allowed.
IsZoomControlEnabled	Determines whether the user is able to impact the zoom of the WebView.
UserAgent	Determines WebView2's User Agent.

Properties

AreBrowserAcceleratorKeysEnabled

bool AreBrowserAcceleratorKeysEnabled

Determines whether browser-specific accelerator keys are enabled. When this setting is set to false, it disables all accelerator keys that access features specific to a web browser, including but not limited to:

• Ctrl+F and F3 for Find on Page
• Ctrl+P for Print
• Ctrl+R and F5 for Reload
• Ctrl+Plus and Ctrl+Minus for zooming
• Ctrl+Shift-C and F12 for DevTools
• Special keys for browser functions, such as Back, Forward, and Search

It does not disable accelerator keys related to movement and text editing, such as:

• Home, End, Page Up, and Page Down
• Ctrl+X, Ctrl+C, Ctrl+V
• Ctrl+A for Select All
• Ctrl+Z for Undo

Those accelerator keys will always be enabled unless they are handled in the CoreWebView2Controller.AcceleratorKeyPressed event.

This setting has no effect on the CoreWebView2Controller.AcceleratorKeyPressed event. The event will be fired for all accelerator keys, whether they are enabled or not.

The default value of AreBrowserAcceleratorKeysEnabled is true.

AreDefaultContextMenusEnabled

bool AreDefaultContextMenusEnabled

Determines whether the default context menus are shown to the user in WebView. The default value is true.

AreDefaultScriptDialogsEnabled

bool AreDefaultScriptDialogsEnabled

Determines whether WebView renders the default JavaScript dialog box. This is used when loading a new HTML document. If set to false, WebView does not render the default JavaScript dialog box (specifically those displayed by the JavaScript alert, confirm, prompt functions and beforeunload event). Instead, WebView raises CoreWebView2.ScriptDialogOpening event that contains all of the information for the dialog and allow the host app to show a custom UI. The default value is true.

AreDevToolsEnabled

bool AreDevToolsEnabled

Determines whether the user is able to use the context menu or keyboard shortcuts to open the DevTools window. The default value is true.

AreHostObjectsAllowed

bool AreHostObjectsAllowed

Determines whether host objects are accessible from the page in WebView. The default value is true.

HiddenPdfToolbarItems

CoreWebView2PdfToolbarItems HiddenPdfToolbarItems

Used to customize the PDF toolbar items. By default, it is CoreWebView2PdfToolbarItems.None and so it displays all of the items. Changes to this property apply to all CoreWebView2s in the same environment and using the same profile. Changes to this setting apply only after the next navigation.

HostObjectDispatchAdapter

ICoreWebView2DispatchAdapter HostObjectDispatchAdapter

The default adapter to be used when passing IInspectable objects to CoreWebView2.AddHostObjectToScript.

IsBuiltInErrorPageEnabled

bool IsBuiltInErrorPageEnabled

Determines whether to disable built in error page for navigation failure and render process failure. When disabled, blank page is displayed when related error happens. The default value is true.

IsGeneralAutofillEnabled

bool IsGeneralAutofillEnabled

Determines whether general form information will be saved and autofilled. General autofill information includes information like names, street and email addresses, phone numbers, and arbitrary input. This excludes password information. When disabled, no suggestions appear, and no new information is saved. When enabled, information is saved, suggestions appear, and clicking on one will populate the form fields. The default value is true. It will apply immediately after setting. This property has the same value as CoreWebView2Profile.IsGeneralAutofillEnabled, and changing one will change the other. And all WebView2s that created with the same CoreWebView2Profile will share the same value for this property, so for the WebView2s with the same profile, their CoreWebView2Settings.IsGeneralAutofillEnabled and CoreWebView2Profile.IsGeneralAutofillEnabled will always have the same value.

IsNonClientRegionSupportEnabled

bool IsNonClientRegionSupportEnabled

The IsNonClientRegionSupportEnabled property enables web pages to use the app-region CSS style. Disabling/Enabling the IsNonClientRegionSupportEnabled takes effect after the next navigation. Defaults to false.

When this property is true, then all the non-client region features will be enabled: Draggable Regions will be enabled, they are regions on a webpage that are marked with the CSS attribute app-region: drag/no-drag. When set to drag, these regions will be treated like the window's title bar, supporting dragging of the entire WebView and its host app window; the system menu shows upon right click, and a double click will trigger maximizing/restoration of the window size. When set to false, all non-client region support will be disabled. The app-region CSS style will be ignored on web pages.

IsPasswordAutosaveEnabled

bool IsPasswordAutosaveEnabled

Determines whether password information will be autosaved. When disabled, no new password data is saved and no Save/Update Password prompts are displayed. However, if there was password data already saved before disabling this setting, then that password information is auto-populated, suggestions are shown and clicking on one will populate the fields. When enabled, password information is auto-populated, suggestions are shown and clicking on one will populate the fields, new data is saved, and a Save/Update Password prompt is displayed. The default value is false. It will apply immediately after setting. This property has the same value as CoreWebView2Profile.IsPasswordAutosaveEnabled, and changing one will change the other. All WebView2s with the same CoreWebView2Profile will share the same value for this property, so for the WebView2s with the same profile, their CoreWebView2Settings.IsPasswordAutosaveEnabled and CoreWebView2Profile.IsPasswordAutosaveEnabled will always have the same value.

IsPinchZoomEnabled

bool IsPinchZoomEnabled

Determines the ability of the end users to use pinching motions on touch input enabled devices to scale the web content in the WebView2. When disabled, the end users cannot use pinching motions on touch input enabled devices to scale the web content in the WebView2. The default value is true. Pinch-zoom, referred to as "Page Scale" zoom, is performed as a post-rendering step, it changes the page scale factor property and scales the surface the web page is rendered onto when user performs a pinch zooming action. It does not change the layout but rather changes the viewport and clips the web content, the content outside of the viewport isn't visible onscreen and users can't reach this content using mouse. This API only affects the Page Scale zoom and has no effect on the existing browser zoom properties (CoreWebView2Settings.IsZoomControlEnabled and CoreWebView2Controller.ZoomFactor) or other end user mechanisms for zooming.

IsReputationCheckingRequired

bool IsReputationCheckingRequired

Determines whether SmartScreen is enabled when visiting web pages The default value is true. IsReputationCheckingRequired is used to control whether SmartScreen is enabled or not. SmartScreen is enabled or disabled for all CoreWebView2s using the same user data folder. If CoreWebView2Setting.IsReputationCheckingRequired is true for any CoreWebView2 using the same user data folder, then SmartScreen is enabled. If CoreWebView2Setting.IsReputationCheckingRequired is false for all CoreWebView2 using the same user data folder, then SmartScreen is disabled. When it is changed, the change will be applied to all WebViews using the same user data folder on the next navigation or download. If the newly created CoreWebview2 does not set SmartScreen to false, when navigating(Such as Navigate(), LoadDataUrl(), ExecuteScript(), etc.), the default value will be applied to all CoreWebview2 using the same user data folder. SmartScreen of WebView2 apps can be controlled by Windows system setting "SmartScreen for Microsoft Edge", specially, for WebView2 in Windows Store apps, SmartScreen is controlled by another Windows system setting "SmartScreen for Microsoft Store apps". When the Windows setting is enabled, the SmartScreen operates under the control of the IsReputationCheckingRequired. When the Windows setting is disabled, the SmartScreen will be disabled regardless of the IsReputationCheckingRequired value set in WebView2 apps. In other words, under this circumstance the value of IsReputationCheckingRequired will be saved but overridden by system setting. Upon re-enabling the Windows setting, the CoreWebview2 will reference the IsReputationCheckingRequired to determine the SmartScreen status.

IsScriptEnabled

bool IsScriptEnabled

Determines whether running JavaScript is enabled in all future navigations in the WebView. This only affects scripts in the document. Scripts injected with CoreWebView2.ExecuteScriptAsync runs even if script is disabled. The default value is true.

IsStatusBarEnabled

bool IsStatusBarEnabled

Determines whether the status bar is displayed. The status bar is usually displayed in the lower left of the WebView and shows things such as the URI of a link when the user hovers over it and other information. The default value is true. The status bar UI can be altered by web content and should not be considered secure.

IsSwipeNavigationEnabled

bool IsSwipeNavigationEnabled

Determines whether the end user to use swiping gesture on touch input enabled devices to navigate in WebView2. Swiping gesture navigation on touch screen includes:

• Swipe left/right (swipe horizontally) to navigate to previous/next page in navigation history.
• Pull to refresh (swipe vertically) the current page. (This feature is currently disabled by default in the browser, to enable in WebView2, set CoreWebView2EnvironmentOptions.AdditionalBrowserArguments property with --pull-to-refresh switch). It defaults to true. When set to false, the end user cannot swipe to navigate or pull to refresh. This API only affects the overscrolling navigation functionality and has no effect on the scrolling interaction used to explore the web content shown in WebView2.

IsWebMessageEnabled

bool IsWebMessageEnabled

Determines whether communication from the host to the top-level HTML document of the WebView is allowed. This is used when loading a new HTML document. If set to true, communication from the host to the top-level HTML document of the WebView is allowed using CoreWebView2.PostWebMessageAsJson, CoreWebView2.PostWebMessageAsString, and message event of window.chrome.webview. Communication from the top-level HTML document of the WebView to the host is allowed using window.chrome.webview.postMessage function and the CoreWebView2.WebMessageReceived event. If set to false, then communication is disallowed. CoreWebView2.PostWebMessageAsJson and CoreWebView2.PostWebMessageAsString fail and window.chrome.webview.postMessage fails by throwing an instance of an Error object. The default value is true.

IsZoomControlEnabled

bool IsZoomControlEnabled

Determines whether the user is able to impact the zoom of the WebView. When disabled, the user is not able to zoom using Ctrl++, Ctr+-, or Ctrl+mouse wheel, but the zoom is set using CoreWebView2Controller.ZoomFactor property. The default value is true.

UserAgent

string UserAgent

Determines WebView2's User Agent. The default value is the default User Agent of the Edge browser. This property may be overridden if the User-Agent header is set in a request. If the parameter is empty the User Agent will not be updated and the current User Agent will remain. Setting this property may clear User Agent Client Hints headers Sec-CH-UA-* and script values from navigator.userAgentData. Current implementation behavior is subject to change. The User Agent set will also be effective on service workers and shared workers associated with the WebView. If there are multiple WebViews associated with the same service worker or shared worker, the last User Agent set will be used.

Referenced by

• CoreWebView2