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CefSettings Class

Version 109.1.110
Initialization settings. Many of these and other settings can also configured using command-line switches.
Inheritance Hierarchy

Namespace:  CefSharp.OffScreen
Assembly:  CefSharp.OffScreen (in CefSharp.OffScreen.dll) Version: 109.1.110.0 (109.1.110.0)
Syntax
public class CefSettings : CefSettingsBase

The CefSettings type exposes the following members.

Constructors
  NameDescription
Public methodCefSettings
Intialize with default values
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Properties
  NameDescription
Public propertyAcceptLanguageList
Comma delimited ordered list of language codes without any whitespace that will be used in the "Accept-Language" HTTP header. May be set globally using the CefSettings.AcceptLanguageList value. If both values are empty then "en-US,en" will be used.
(Inherited from CefSettingsBase.)
Public propertyBackgroundColor
Background color used for the browser before a document is loaded and when no document color is specified. The alpha component must be either fully opaque (0xFF) or fully transparent (0x00). If the alpha component is fully opaque then the RGB components will be used as the background color. If the alpha component is fully transparent for a WinForms browser then the default value of opaque white be used. If the alpha component is fully transparent for a windowless (WPF/OffScreen) browser then transparent painting will be enabled.
(Inherited from CefSettingsBase.)
Public propertyBrowserSubprocessPath
The path to a separate executable that will be launched for sub-processes. By default the browser process executable is used. See the comments on Cef.ExecuteProcess() for details. If this value is non-empty then it must be an absolute path. Also configurable using the "browser-subprocess-path" command-line switch. Defaults to using the provided CefSharp.BrowserSubprocess.exe instance
(Inherited from CefSettingsBase.)
Public propertyCachePath
The location where data for the global browser cache will be stored on disk. In this value is non-empty then it must be an absolute path that is must be either equal to or a child directory of CefSettings.RootCachePath (if RootCachePath is empty it will default to this value). If the value is empty then browsers will be created in "incognito mode" where in-memory caches are used for storage and no data is persisted to disk. HTML5 databases such as localStorage will only persist across sessions if a cache path is specified. Can be overridden for individual RequestContext instances via the RequestContextSettings.CachePath value.
(Inherited from CefSettingsBase.)
Public propertyCefCommandLineArgs
Add custom command line argumens to this collection, they will be added in OnBeforeCommandLineProcessing. The CefSettings.CommandLineArgsDisabled value can be used to start with an empty command-line object. Any values specified in CefSettings that equate to command-line arguments will be set before this method is called.
(Inherited from CefSettingsBase.)
Public propertyCefCustomSchemes
Add Customs schemes to this collection.
(Inherited from CefSettingsBase.)
Public propertyChromeRuntime
**Experimental** Set to true to enable use of the Chrome runtime in CEF. This feature is considered experimental and is not recommended for most users at this time. See issue https://bitbucket.org/chromiumembedded/cef/issues/2969/support-chrome-windows-with-cef-callbacks for details.
(Inherited from CefSettingsBase.)
Public propertyCommandLineArgsDisabled
Set to true to disable configuration of browser process features using standard CEF and Chromium command-line arguments. Configuration can still be specified using CEF data structures or by adding to CefCommandLineArgs.
(Inherited from CefSettingsBase.)
Public propertyCookieableSchemesExcludeDefaults
If CookieableSchemesExcludeDefaults is false the default schemes ("http", "https", "ws" and "wss") will also be supported. Specifying a CookieableSchemesList value and setting CookieableSchemesExcludeDefaults to true will disable all loading and saving of cookies for this manager. Can be overridden for individual RequestContext instances via the RequestContextSettings.CookieableSchemesList and RequestContextSettings.CookieableSchemesExcludeDefaults values.
(Inherited from CefSettingsBase.)
Public propertyCookieableSchemesList
Comma delimited list of schemes supported by the associated ICookieManager. If CookieableSchemesExcludeDefaults is false the default schemes ("http", "https", "ws" and "wss") will also be supported. Specifying a CookieableSchemesList value and setting CookieableSchemesExcludeDefaults to true will disable all loading and saving of cookies for this manager. Can be overridden for individual RequestContext instances via the RequestContextSettings.CookieableSchemesList and RequestContextSettings.CookieableSchemesExcludeDefaults values.
(Inherited from CefSettingsBase.)
Public propertyExternalMessagePump
Set to true to control browser process main (UI) thread message pump scheduling via the IBrowserProcessHandler.OnScheduleMessagePumpWork callback. This option is recommended for use in combination with the Cef.DoMessageLoopWork() function in cases where the CEF message loop must be integrated into an existing application message loop (see additional comments and warnings on Cef.DoMessageLoopWork). Enabling this option is not recommended for most users; leave this option disabled and use either MultiThreadedMessageLoop (the default) if possible.
(Inherited from CefSettingsBase.)
Public propertyIgnoreCertificateErrors
Set to true in order to completely ignore SSL certificate errors. This is NOT recommended.
(Inherited from CefSettingsBase.)
Public propertyIsDisposed
Gets a value indicating if the CefSettings has been disposed.
(Inherited from CefSettingsBase.)
Public propertyJavascriptFlags
Custom flags that will be used when initializing the V8 JavaScript engine. The consequences of using custom flags may not be well tested. Also configurable using the "js-flags" command-line switch.
(Inherited from CefSettingsBase.)
Public propertyLocale
The locale string that will be passed to WebKit. If empty the default locale of "en-US" will be used. Also configurable using the "lang" command-line switch.
(Inherited from CefSettingsBase.)
Public propertyLocalesDirPath
The fully qualified path for the locales directory. If this value is empty the locales directory must be located in the module directory. If this value is non-empty then it must be an absolute path. Also configurable using the "locales-dir-path" command-line switch.
(Inherited from CefSettingsBase.)
Public propertyLogFile
The directory and file name to use for the debug log. If empty a default log file name and location will be used. On Windows a "debug.log" file will be written in the main executable directory. Also configurable using the"log-file" command- line switch.
(Inherited from CefSettingsBase.)
Public propertyLogSeverity
The log severity. Only messages of this severity level or higher will be logged. When set to Disable no messages will be written to the log file, but Fatal messages will still be output to stderr. Also configurable using the "log-severity" command-line switch with a value of "verbose", "info", "warning", "error", "fatal", "error-report" or "disable".
(Inherited from CefSettingsBase.)
Public propertyMultiThreadedMessageLoop
Set to true to have the browser process message loop run in a separate thread. If false then the CefDoMessageLoopWork() function must be called from your application message loop. This option is only supported on Windows. The default value is true.
(Inherited from CefSettingsBase.)
Public propertyPackLoadingDisabled
Set to true to disable loading of pack files for resources and locales. A resource bundle handler must be provided for the browser and render processes via CefApp.GetResourceBundleHandler() if loading of pack files is disabled. Also configurable using the "disable-pack-loading" command- line switch.
(Inherited from CefSettingsBase.)
Public propertyPersistSessionCookies
To persist session cookies (cookies without an expiry date or validity interval) by default when using the global cookie manager set this value to true. Session cookies are generally intended to be transient and most Web browsers do not persist them. A CachePath value must also be specified to enable this feature. Also configurable using the "persist-session-cookies" command-line switch. Can be overridden for individual RequestContext instances via the RequestContextSettings.PersistSessionCookies value.
(Inherited from CefSettingsBase.)
Public propertyPersistUserPreferences
To persist user preferences as a JSON file in the cache path directory set this value to true. A CachePath value must also be specified to enable this feature. Also configurable using the "persist-user-preferences" command-line switch. Can be overridden for individual RequestContext instances via the RequestContextSettings.PersistUserPreferences value.
(Inherited from CefSettingsBase.)
Public propertyRemoteDebuggingPort
Set to a value between 1024 and 65535 to enable remote debugging on the specified port. For example, if 8080 is specified the remote debugging URL will be http://localhost:8080. CEF can be remotely debugged from any CEF or Chrome browser window. Also configurable using the "remote-debugging-port" command-line switch.
(Inherited from CefSettingsBase.)
Public propertyResourcesDirPath
The fully qualified path for the resources directory. If this value is empty the cef.pak and/or devtools_resources.pak files must be located in the module directory. Also configurable using the "resources-dir-path" command-line switch.
(Inherited from CefSettingsBase.)
Public propertyRootCachePath
The root directory that all CefSettings.CachePath and RequestContextSettings.CachePath values must have in common. If this value is empty and CefSettings.CachePath is non-empty then it will default to the CefSettings.CachePath value. If this value is non-empty then it must be an absolute path. Failure to set this value correctly may result in the sandbox blocking read/write access to the CachePath directory. NOTE: CefSharp does not implement the CHROMIUM SANDBOX. A non-empty RootCachePath can be used in conjuncation with an empty CefSettings.CachePath in instances where you would like browsers attached to the Global RequestContext (the default) created in "incognito mode" and instances created with a custom RequestContext using a disk based cache.
(Inherited from CefSettingsBase.)
Public propertyUncaughtExceptionStackSize
The number of stack trace frames to capture for uncaught exceptions. Specify a positive value to enable the CefRenderProcessHandler. OnUncaughtException() callback. Specify 0 (default value) and OnUncaughtException() will not be called. Also configurable using the "uncaught-exception-stack-size" command-line switch.
(Inherited from CefSettingsBase.)
Public propertyUserAgent
Value that will be returned as the User-Agent HTTP header. If empty the default User-Agent string will be used. Also configurable using the "user-agent" command-line switch.
(Inherited from CefSettingsBase.)
Public propertyUserAgentProduct
Value that will be inserted as the product portion of the default User-Agent string. If empty the Chromium product version will be used. If UserAgent is specified this value will be ignored. Also configurable using the "user-agent-product" command- line switch.
(Inherited from CefSettingsBase.)
Public propertyUserDataPath
The location where user data such as the Widevine CDM module and spell checking dictionary files will be stored on disk. If this value is empty then "Local Settings\Application Data\CEF\User Data" directory under the user profile directory will be used. If this value is non-empty then it must be an absolute path.
(Inherited from CefSettingsBase.)
Public propertyWindowlessRenderingEnabled
Set to true (1) to enable windowless (off-screen) rendering support. Do not enable this value if the application does not use windowless rendering as it may reduce rendering performance on some systems.
(Inherited from CefSettingsBase.)
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Methods
  NameDescription
Public methodDisableGpuAcceleration
Set command line argument to disable GPU Acceleration. WebGL will use software rendering
(Inherited from CefSettingsBase.)
Public methodDispose
Free the unmanaged CefSettingsBase instance. Under normal circumstances you shouldn't need to call this The unmanaged resource will be freed after Initialize(CefSettingsBase) (or one of the overloads) is called.
(Inherited from CefSettingsBase.)
Public methodEnableAudio
Enables Audio - by default audio is muted in the OffScreen implementatio. This removes the mute-audio command line flag
Public methodEnablePrintPreview
Set command line argument to enable Print Preview See https://bitbucket.org/chromiumembedded/cef/issues/123/add-support-for-print-preview for details.
(Inherited from CefSettingsBase.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodRegisterScheme
Registers a custom scheme using the provided settings.
(Inherited from CefSettingsBase.)
Public methodSetOffScreenRenderingBestPerformanceArgs
Set command line arguments for best OSR (Offscreen and WPF) Rendering performance Software Rendering will be used for WebGL, look at the source to determine which flags best suite your requirements.
(Inherited from CefSettingsBase.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
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See Also