CoreWebView2EnvironmentOptions Class

Artikel
11/06/2023

Options used to create WebView2 Environment. Default values will use your defaulted Edge WebView2 Runtime binaries and user data folder.

Summary

Members	Description
AdditionalBrowserArguments	Gets or sets the additional browser arguments to change the behavior of the WebView.
AllowSingleSignOnUsingOSPrimaryAccount	Determines whether to enable single sign on with Azure Active Directory (AAD) resources inside WebView using the logged in Windows account and single sign on (SSO) with web sites using Microsoft account associated with the login in Windows account.
CustomSchemeRegistrations
EnableTrackingPrevention	The EnableTrackingPrevention property is used to enable/disable tracking prevention feature in WebView2. This property enable/disable tracking prevention for all the WebView2's created in the same environment. By default this feature is enabled to block potentially harmful trackers and trackers from sites that aren't visited before and set to CoreWebView2TrackingPreventionLevel.Balanced or whatever value was last changed/persisted on the profile.
ExclusiveUserDataFolderAccess	Determines whether other processes can create CoreWebView2Controller from CoreWebView2Environment created with the same user data folder and therefore sharing the same WebView browser process instance.
IsCustomCrashReportingEnabled	When `IsCustomCrashReportingEnabled` is set to `true`, Windows won't send crash data to Microsoft endpoint.
Language	Gets or sets the default display language for WebView.
TargetCompatibleBrowserVersion	Gets or sets the version of the WebView2 Runtime binaries required to be compatible with your app.
CoreWebView2EnvironmentOptions

Properties

AdditionalBrowserArguments

string AdditionalBrowserArguments

Gets or sets the additional browser arguments to change the behavior of the WebView. The arguments are passed to the browser process as part of the command. For more information about using command-line switches with Chromium browser processes, navigate to Run Chromium with Flags. The value appended to a switch is appended to the browser process, for example, in --edge-webview-switches=xxx the value is xxx. If you specify a switch that is important to WebView functionality, it is ignored, for example, --user-data-dir. Specific features are disabled internally and blocked from being enabled. If a switch is specified multiple times, only the last instance is used.

A merge of the different values of the same switch is not attempted, except for disabled and enabled features. The features specified by --enable-features and --disable-features will be merged with simple logic:

The features are the union of the specified features and built-in features. If a feature is disabled, it is removed from the enabled features list. If you specify command-line switches and sets this property, the --edge-webview-switches value takes precedence and is processed last. If a switch fails to parse, the switch is ignored. The default state for the operation is to run the browser process with no extra flags. Please note that calling this API twice will replace the previous value rather than appending to it. If there are multiple switches, there should be a space in between them. The one exception is if multiple features are being enabled/disabled for a single switch, in which case the features should be comma-separated. Ex. "--disable-features=feature1,feature2 --some-other-switch --do-something"

AllowSingleSignOnUsingOSPrimaryAccount

bool AllowSingleSignOnUsingOSPrimaryAccount

Determines whether to enable single sign on with Azure Active Directory (AAD) resources inside WebView using the logged in Windows account and single sign on (SSO) with web sites using Microsoft account associated with the login in Windows account. The default value is false. Universal Windows Platform apps must also declare enterpriseCloudSSO restricted capability for the single sign on (SSO) to work.

CustomSchemeRegistrations

IVector<CoreWebView2CustomSchemeRegistration> CustomSchemeRegistrations

EnableTrackingPrevention

bool EnableTrackingPrevention

The EnableTrackingPrevention property is used to enable/disable tracking prevention feature in WebView2. This property enable/disable tracking prevention for all the WebView2's created in the same environment. By default this feature is enabled to block potentially harmful trackers and trackers from sites that aren't visited before and set to CoreWebView2TrackingPreventionLevel.Balanced or whatever value was last changed/persisted on the profile. You can set this property to false to disable the tracking prevention feature if the app only renders content in the WebView2 that is known to be safe. Disabling this feature when creating environment also improves runtime performance by skipping related code.

You shouldn't disable this property if WebView2 is being used as a "full browser" with arbitrary navigation and should protect end user privacy.

There is CoreWebView2Profile.PreferredTrackingPreventionLevel property to control levels of tracking prevention of the WebView2's associated with a same profile. However, you can also disable tracking prevention later using CoreWebView2Profile.PreferredTrackingPreventionLevel property and CoreWebView2TrackingPreventionLevel.None value but that doesn't improves runtime performance.

See CoreWebView2Profile.PreferredTrackingPreventionLevel for more details.

Tracking prevention protects users from online tracking by restricting the ability of trackers to access browser-based storage as well as the network. See Tracking prevention.

ExclusiveUserDataFolderAccess

bool ExclusiveUserDataFolderAccess

Determines whether other processes can create CoreWebView2Controller from CoreWebView2Environment created with the same user data folder and therefore sharing the same WebView browser process instance. The default value is false.

IsCustomCrashReportingEnabled

bool IsCustomCrashReportingEnabled

When IsCustomCrashReportingEnabled is set to true, Windows won't send crash data to Microsoft endpoint. The default value is false. In this case, WebView will respect OS consent.

Language

string Language

Gets or sets the default display language for WebView. It applies to browser UIs such as context menu and dialogs. It also applies to the accept-languages HTTP header that WebView sends to websites. The intended locale value is in the format of BCP 47 Language Tags. More information can be found from IETF BCP47.

TargetCompatibleBrowserVersion

string TargetCompatibleBrowserVersion

Gets or sets the version of the WebView2 Runtime binaries required to be compatible with your app. This defaults to the WebView2 Runtime version that corresponds with the version of the SDK the app is using. The format of this value is the same as the format of the CoreWebView2Environment.BrowserVersionString property and other BrowserVersion values. Only the version part of the BrowserVersion value is respected. The channel suffix, if it exists, is ignored. The version of the WebView2 Runtime binaries actually used may be different from the specified TargetCompatibleBrowserVersion. The binaries are only guaranteed to be compatible. Verify the actual version on the CoreWebView2Environment.BrowserVersionString property.