Compartir a través de

  • Artículo

WebBrowser Class

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

Hosts HTML content within the Silverlight plug-in.

Inheritance Hierarchy

System.Object
  System.Windows.DependencyObject
    System.Windows.UIElement
      System.Windows.FrameworkElement
        System.Windows.Controls.WebBrowser

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

Syntax

'Declaration
Public NotInheritable Class WebBrowser _
    Inherits FrameworkElement

public sealed class WebBrowser : FrameworkElement

<WebBrowser .../>

The WebBrowser type exposes the following members.

Constructors

  Name Description
Public method WebBrowser Initializes a new instance of the WebBrowser class.

Top

Properties

  Name Description
Public property ActualHeight Gets the rendered height of a FrameworkElement. (Inherited from FrameworkElement.)
Public property ActualWidth Gets the rendered width of a FrameworkElement. (Inherited from FrameworkElement.)
Public property AllowDrop Gets or sets a value that determines whether this UIElement can be a drop target for purposes of Silverlight drag-and-drop operations. (Inherited from UIElement.)
Public property CacheMode Gets or sets a value that indicates that rendered content should be cached when possible. (Inherited from UIElement.)
Public property Clip Gets or sets the Geometry used to define the outline of the contents of a UIElement. (Inherited from UIElement.)
Public property Cursor Gets or sets the cursor image that displays while the mouse pointer is over a FrameworkElement. (Inherited from FrameworkElement.)
Public property DataContext Gets or sets the data context for a FrameworkElement when it participates in data binding. (Inherited from FrameworkElement.)
Public property DesiredSize Gets the size that this UIElement computed during the measure pass of the layout process. (Inherited from UIElement.)
Public property Dispatcher Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
Public property Effect Gets or sets the pixel shader effect to use for rendering this UIElement. (Inherited from UIElement.)
Public property FlowDirection Gets or sets the direction that text and other user interface elements flow within any parent element that controls their layout. (Inherited from FrameworkElement.)
Public property Height Gets or sets the suggested height of a FrameworkElement. (Inherited from FrameworkElement.)
Public property HorizontalAlignment Gets or sets the horizontal alignment characteristics that are applied to a FrameworkElement when it is composed in a layout parent, such as a panel or items control. (Inherited from FrameworkElement.)
Public property IsHitTestVisible Gets or sets whether the contained area of this UIElement can return true values for hit testing. (Inherited from UIElement.)
Public property Language Gets or sets localization/globalization language information that applies to a FrameworkElement. (Inherited from FrameworkElement.)
Public property Margin Gets or sets the outer margin of a FrameworkElement. (Inherited from FrameworkElement.)
Public property MaxHeight Gets or sets the maximum height constraint of a FrameworkElement. (Inherited from FrameworkElement.)
Public property MaxWidth Gets or sets the maximum width constraint of a FrameworkElement. (Inherited from FrameworkElement.)
Public property MinHeight Gets or sets the minimum height constraint of a FrameworkElement. (Inherited from FrameworkElement.)
Public property MinWidth Gets or sets the minimum width constraint of a FrameworkElement. (Inherited from FrameworkElement.)
Public property Name Gets or sets the identifying name of the object. When a XAML processor creates the object tree from XAML markup, run-time code can refer to the XAML-declared object by this name. (Inherited from FrameworkElement.)
Public property Opacity Gets or sets the degree of the object's opacity. (Inherited from UIElement.)
Public property OpacityMask Gets or sets the brush used to alter the opacity of regions of this object. (Inherited from UIElement.)
Public property Parent Gets the parent object of this FrameworkElement in the object tree. (Inherited from FrameworkElement.)
Public property Projection Gets or sets the perspective projection (3-D effect) to apply when rendering this UIElement. (Inherited from UIElement.)
Public property RenderSize Gets the final render size of a UIElement. (Inherited from UIElement.)
Public property RenderTransform Gets or sets transform information that affects the rendering position of a UIElement. (Inherited from UIElement.)
Public property RenderTransformOrigin Gets or sets the origin point of any possible render transform declared by RenderTransform, relative to the bounds of the UIElement. (Inherited from UIElement.)
Public property Resources Gets the locally defined resource dictionary. In XAML, you can establish resource items as child object elements of a frameworkElement.Resources property element, through XAML implicit collection syntax. (Inherited from FrameworkElement.)
Public property Source Gets or sets the URI source of the HTML content to display in the WebBrowser control.
Public property Style Gets or sets an instance Style that is applied for this object during rendering. (Inherited from FrameworkElement.)
Public property Tag Gets or sets an arbitrary object value that can be used to store custom information about this object. (Inherited from FrameworkElement.)
Public property Triggers Gets the collection of triggers for animations that are defined for a FrameworkElement. (Inherited from FrameworkElement.)
Public property UseLayoutRounding Gets or sets a value that determines whether rendering for the object and its visual subtree should use rounding behavior that aligns rendering to whole pixels. (Inherited from UIElement.)
Public property VerticalAlignment Gets or sets the vertical alignment characteristics that are applied to a FrameworkElement when it is composed in a parent object such as a panel or items control. (Inherited from FrameworkElement.)
Public property Visibility Gets or sets the visibility of a UIElement. A UIElement that is not visible does not render and does not communicate its desired size to layout. (Inherited from UIElement.)
Public property Width Gets or sets the width of a FrameworkElement. (Inherited from FrameworkElement.)

Top

Methods

  Name Description
Public method AddHandler Adds a routed event handler for a specified routed event, adding the handler to the handler collection on the current element. Specify handledEventsToo as true to have the provided handler be invoked for routed event that had already been marked as handled by another element along the event route. (Inherited from UIElement.)
Public method Arrange Positions child objects and determines a size for a UIElement. Parent objects that implement custom layout for their child elements should call this method from their layout override implementations to form a recursive layout update. (Inherited from UIElement.)
Protected method ArrangeOverride Provides the behavior for the Arrange pass of Silverlight layout. Classes can override this method to define their own Arrange pass behavior. (Inherited from FrameworkElement.)
Public method CaptureMouse Sets mouse capture to a UIElement. (Inherited from UIElement.)
Public method CheckAccess Determines whether the calling thread has access to this object. (Inherited from DependencyObject.)
Public method ClearValue Clears the local value of a dependency property. (Inherited from DependencyObject.)
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public method FindName Retrieves an object that has the specified identifier name. (Inherited from FrameworkElement.)
Public method GetAnimationBaseValue Returns any base value established for a Silverlight dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.)
Public method GetBindingExpression Retrieves the BindingExpression for a dependency property where a binding is established. (Inherited from FrameworkElement.)
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public method GetValue Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.)
Public method InvalidateArrange Invalidates the arrange state (layout) for a UIElement. After the invalidation, the UIElement will have its layout updated, which will occur asynchronously. (Inherited from UIElement.)
Public method InvalidateMeasure Invalidates the measurement state (layout) for a UIElement. (Inherited from UIElement.)
Public method InvokeScript(String) Executes the specified script, which is defined in the currently loaded HTML.
Public method InvokeScript(String, array<String[]) Executes the specified script function, which is defined in the currently loaded HTML, with the specified arguments.
Public method Measure Updates the DesiredSize of a UIElement. Typically, objects that implement custom layout for their layout children call this method from their own MeasureOverride implementations to form a recursive layout update. (Inherited from UIElement.)
Protected method MeasureOverride Provides the behavior for the Measure pass of Silverlight layout. Classes can override this method to define their own Measure pass behavior. (Inherited from FrameworkElement.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method Navigate Loads the HTML content at the specified URI.
Public method NavigateToString Displays the specified HTML content.
Public method OnApplyTemplate When overridden in a derived class, is invoked whenever application code or internal processes (such as a rebuilding layout pass) call ApplyTemplate. In simplest terms, this means the method is called just before a UI element displays in an application. For more information, see Remarks. (Inherited from FrameworkElement.)
Protected method OnCreateAutomationPeer When implemented in a derived class, returns class-specific AutomationPeer implementations for the Silverlight automation infrastructure. (Inherited from UIElement.)
Public method ReadLocalValue Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.)
Public method ReleaseMouseCapture Removes mouse capture from a UIElement. After this call, typically no object holds mouse capture. (Inherited from UIElement.)
Public method RemoveHandler Removes the specified routed event handler from this UIElement. (Inherited from UIElement.)
Public method SaveToString Saves the source for the HTML content currently displayed in the WebBrowser as a string.
Public method SetBinding Attaches a binding to a FrameworkElement, using the provided binding object, and returns a BindingExpressionBase for possible later use. (Inherited from FrameworkElement.)
Public method SetValue Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.)
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
Public method TransformToVisual Returns a transform object that can be used to transform coordinates from the UIElement to the specified object. (Inherited from UIElement.)
Public method UpdateLayout Ensures that all positions of child objects of a UIElement are properly updated for layout. (Inherited from UIElement.)

Top

Events

  Name Description
Public event BindingValidationError Occurs when a data validation error is reported by a binding source. (Inherited from FrameworkElement.)
Public event DataContextChanged Occurs when the data context for this element changes. (Inherited from FrameworkElement.)
Public event DragEnter Occurs when the input system reports an underlying drag event with this element as the target. (Inherited from UIElement.)
Public event DragLeave Occurs when the input system reports an underlying drag event with this element as the origin. (Inherited from UIElement.)
Public event DragOver Occurs when the input system reports an underlying drag event with this element as the potential drop target. (Inherited from UIElement.)
Public event Drop Occurs when the input system reports an underlying drop event with this element as the drop target. (Inherited from UIElement.)
Public event GotFocus Occurs when a UIElement receives focus. (Inherited from UIElement.)
Public event KeyDown Occurs when a keyboard key is pressed while the UIElement has focus. (Inherited from UIElement.)
Public event KeyUp Occurs when a keyboard key is released while the UIElement has focus. (Inherited from UIElement.)
Public event LayoutUpdated Occurs when the layout of the Silverlight visual tree changes. (Inherited from FrameworkElement.)
Public event LoadCompleted Occurs when top-level navigation completes and the content loads into the WebBrowser control or when an error occurs during loading.
Public event Loaded Occurs when a FrameworkElement has been constructed and added to the object tree. (Inherited from FrameworkElement.)
Public event LostFocus Occurs when a UIElement loses focus. (Inherited from UIElement.)
Public event LostMouseCapture Occurs when the UIElement loses mouse capture. (Inherited from UIElement.)
Public event MediaCommand Occurs when a button is pressed on a remote control. (Inherited from UIElement.)
Public event MouseEnter Occurs when the mouse (or a stylus) enters the bounding area of a UIElement. (Inherited from UIElement.)
Public event MouseLeave Occurs when the mouse (or the stylus) leaves the bounding area of a UIElement. (Inherited from UIElement.)
Public event MouseLeftButtonDown Occurs when the left mouse button is pressed (or when the tip of the stylus touches the tablet) while the mouse pointer is over a UIElement. (Inherited from UIElement.)
Public event MouseLeftButtonUp Occurs when the left mouse button is released (or the tip of the stylus is removed from the tablet) while the mouse (or the stylus) is over a UIElement (or while a UIElement holds mouse capture). (Inherited from UIElement.)
Public event MouseMove Occurs when the coordinate position of the mouse (or stylus) changes while over a UIElement (or while a UIElement holds mouse capture). (Inherited from UIElement.)
Public event MouseRightButtonDown Occurs when the right mouse button is pressed while the mouse pointer is over a UIElement. (Inherited from UIElement.)
Public event MouseRightButtonUp Occurs when the right mouse button is released while the mouse pointer is over a UIElement. However, this event will only be raised if a caller marks the preceding MouseRightButtonDown event as handled; see Remarks. (Inherited from UIElement.)
Public event MouseWheel Occurs when the user rotates the mouse wheel while the mouse pointer is over a UIElement, or the UIElement has focus. (Inherited from UIElement.)
Public event ScriptNotify Occurs when the content contained in the WebBrowser control passes a string to the Silverlight plug-in by using JavaScript.
Public event SizeChanged Occurs when either the ActualHeight or the ActualWidth properties change value on a FrameworkElement. (Inherited from FrameworkElement.)
Public event TextInput Occurs when a UI element gets text in a device-independent manner. (Inherited from UIElement.)
Public event TextInputStart Occurs when a UI element initially gets text in a device-independent manner. (Inherited from UIElement.)
Public event TextInputUpdate Occurs when text continues to be composed via an input method editor (IME). (Inherited from UIElement.)
Public event Unloaded Occurs when this object is no longer connected to the main object tree. (Inherited from FrameworkElement.)

Top

Remarks

The WebBrowser control is intended for use in a Silverlight 4 or later out-of-browser application or in a Silverlight 5 in-browser trusted application. When you use a WebBrowser control in an application that runs inside a browser in partial trust, a rectangle the same size as the WebBrowser control will display instead of the WebBrowser and its content. For more information about how to run an application outside the browser, see How to: Configure an Application for Out-of-Browser Support. For more information about trusted in-browser applications, see How to: Enable Trusted Applications to Run Inside the Browser.

You should always set the Height and Width of the WebBrowser control, as its default Height and Width are 0.

You can specify the HTML content to display in the WebBrowser control in a number of ways.

  • Call the NavigateToString(String) method and pass a string that contains the HTML content you want to display.

  • Set the Source property to a fully qualified or relative URI.

  • Call the Navigate(Uri) method and pass a fully qualified or relative URI for the HTML content you want to display.

In addition, you can call scripts in the HTML content by calling the InvokeScript(String) method and passing the name of the script you want to execute. You can use the ScriptNotify method of the Window.External object to communicate from JavaScript in the HTML to managed code. The ScriptNotify event occurs when this happens.

NoteNote:

The WebBrowser displays HTML content in applications running in a Silverlight 4 or later out-of-browser applications or in Silverlight 5 in-browser trusted applications only. When using the WebBrowser control in applications hosted in a partial-trust browser environment, the control will display as a rectangle the same size as the WebBrowser control.

All content displayed in the WebBrowser control must be the same schema; http or https. If you host content in an <iframe>, all the regular security rules for iframes apply.

In addition, when you are using the WebBrowser control in a Silverlight application in full-screen mode, the WebBrowser is not interactive. For more information about full-screen mode see Full-Screen Support.

Examples

The following example shows a WebBrowser with its Source property set to an HTML page. In a button event handler, the WebBrowser source is changed to a different HTML page by calling the Navigate(Uri) method. The host Silverlight application must be running in a Silverlight 4 or later out-of-browser application or in a Silverlight 5 in-browser trusted application for this example to function correctly.

Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.Windows.RoutedEventArgs)
    WB1.Navigate(New Uri("https://localhost/HTMLPage2.htm"))


private void Button1_Click(object sender, RoutedEventArgs e)
{
    WB1.Navigate(new Uri("https://localhost/HTMLPage2.htm"));

}

<TextBlock Text="WebBrowser Control" />
<WebBrowser Source="https://localhost/HTMLPage1.html" Height="160" Width="160" x:Name="WB1"/>
<Button Width="200" x:Name="Button1" Content="Click for HTML content" Click="Button1_Click"   />

Version Information

Silverlight

Supported in: 5, 4

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.