Articolo
11/17/2011

HtmlWindow Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Provides the managed representation of the JavaScript window object.

Inheritance Hierarchy

System.Object
  System.Windows.Browser.ScriptObject
    System.Windows.Browser.HtmlObject
      System.Windows.Browser.HtmlWindow

Namespace: System.Windows.Browser
Assembly: System.Windows.Browser (in System.Windows.Browser.dll)

Syntax

'Declaration
Public NotInheritable Class HtmlWindow _
    Inherits HtmlObject

public sealed class HtmlWindow : HtmlObject

The HtmlWindow type exposes the following members.

Properties

	Name	Description
	CurrentBookmark	Gets or sets a string that represents the hash value of the current page's URL.
	Dispatcher	Gets an instance of the dispatcher. (Inherited from ScriptObject.)
	ManagedObject	Gets the underlying managed object reference of the ScriptObject. (Inherited from ScriptObject.)

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Methods

	Name	Description
	Alert	Displays a dialog box that contains an application-defined message.
	AttachEvent(String, EventHandler)	Attaches the specified .NET Framework event handler (EventHandler) to the specified event on the current Document Object Model (DOM) object. (Inherited from HtmlObject.)
	AttachEvent(String, EventHandler<HtmlEventArgs>)	Attaches the specified .NET Framework event handler (EventHandler<TEventArgs>) to the specified event on the current Document Object Model (DOM) object. (Inherited from HtmlObject.)
	CheckAccess	Determines whether the current thread is the browser's UI thread. (Inherited from ScriptObject.)
	Confirm	Displays a confirmation dialog box that contains an optional message as well as OK and Cancel buttons.
	ConvertTo(Type, Boolean)	Converts the current object to a specified type. This method is not supported. (Inherited from HtmlObject.)
	ConvertTo<T>()	Converts the current scriptable object to a specified type. (Inherited from ScriptObject.)
	CreateInstance	Creates an instance of the specified JavaScript type.
	DetachEvent(String, EventHandler)	Detaches the specified.NET Framework event handler (EventHandler) from the specified event on the current Document Object Model (DOM) object. (Inherited from HtmlObject.)
	DetachEvent(String, EventHandler<HtmlEventArgs>)	Detaches the specified .NET Framework event handler (EventHandler<TEventArgs>) from the specified event on the current Document Object Model (DOM) object. (Inherited from HtmlObject.)
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Eval	Evaluates a string that contains arbitrary JavaScript code.
	Finalize	Frees resources and performs other cleanup operations before the scriptable object is reclaimed by garbage collection. (Inherited from ScriptObject.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetProperty(Int32)	Gets the value of a property that is identified by ordinal number on the current scriptable object. (Inherited from ScriptObject.)
	GetProperty(String)	Gets the value of a property that is identified by name on the current scriptable object. (Inherited from ScriptObject.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Initialize	Infrastructure. Initializes a scriptable object. (Inherited from ScriptObject.)
	Invoke	Invokes a method on the current scriptable object, and optionally passes in one or more method parameters. (Inherited from ScriptObject.)
	InvokeSelf	Invokes the current ScriptObject and assumes that it represents a JavaScript method. (Inherited from ScriptObject.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Navigate(Uri)	Opens the specified page in the current browser.
	Navigate(Uri, String)	Opens the specified page in the specified browser instance.
	Navigate(Uri, String, String)	Opens the specified page in the specified browser instance, with the indicated user interface features.
	NavigateToBookmark	Changes the URL of the current page to a location that is specified by a named bookmark.
	Prompt	Displays a dialog box that prompts the user with a message and an input field.
	SetProperty(Int32, Object)	Sets the value of a property that is identified by ordinal number on the current scriptable object. (Inherited from ScriptObject.)
	SetProperty(String, Object)	Sets a property that is identified by name on the current scriptable object. (Inherited from ScriptObject.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Explicit Interface Implementations

	Name	Description
	IDynamicMetaObjectProvider.GetMetaObject	Returns the DynamicMetaObject responsible for binding operations performed on this object. (Inherited from ScriptObject.)

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Remarks

When the Silverlight plug-in's enableHtmlAccess property is set to false, any attempt to use the HtmlWindow class fails with a NotSupportedException stating that the feature is disabled.

For information about the JavaScript window object, see the window object in the dynamic HTML (DHTML) documentation.

For information about the enableHtmlAccess property, see Security Settings in HTML Bridge.

If you are using Safari version 2 or 3 on a Macintosh computer, comparing two or more managed HtmlWindow references that point to the same Document Object Model (DOM) window reference returns false.

Examples

The following example accesses a page that has one IFRAME. HTML Bridge methods are used to get two references to the IFRAME.

HtmlWindow htmlWin1  = HtmlPage.Window;
HtmlWindow htmlWin2  = HtmlPage.Window;

The following comparison returns false on Safari 2 or 3 on a Macintosh computer:

bool areEqual = (htmlWin1== htmlWin2);

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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