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WPF events quick reference

This page applies to WPF projects only

An event occurs when there is a change in your Microsoft Expression Blend application. For example, if someone who is running your application clicks a button, a Click event is raised. You can make your application respond to events by using event triggers in Expression Blend, or by using event handlers, which are programmed in code. For more information, see Triggers and user interactivity and Event handling and user interactivity.

Cc295158.alert_note(en-us,Expression.10).gifNote:

This topic contains information for Windows Presentation Foundation applications. For information about Microsoft Silverlight 1.0 event handling, see Overview of Silverlight 1.0 and Create a button that controls a storyboard in a Silverlight application. Also see Silverlight scripting and mouse events. For information about Silverlight 2 events, see the documentation for the individual controls listed in the Silverlight 2 Control Gallery.

Though you cannot write program code for event handlers within Expression Blend, you can use the event handler feature to generate code for event handler methods. To generate event handler code, click the Events Cc295158.6c67bb3b-e8a2-4a63-bad5-54d5c15b04dd(en-us,Expression.10).png button within the Properties panel, and then double-click an event. If you have Microsoft Visual Studio 2008 Standard Edition or above installed, double-clicking an event in Expression Blend will enable an automated experience in which the code for the event handler is automatically pasted into the code-behind file for your application. If you have Visual Studio Express Edition installed, or if you do not have any edition of Visual Studio installed, your experience will involve a manual workflow that uses the Clipboard. You can configure Expression blend in two different modes, to choose between these two experiences. To do so, click Options on the Tools menu, click Event Handlers, and then select whether to use Visual Studio if it is available, or whether to always use the Clipboard. For more information, see Event handling and user interactivity and Create a new event handler method.

For quick reference, following is a list of the events that are available within Expression Blend. The events that are available may vary according to the object that you have selected under Objects and Timeline in the Interaction panel. For example, if you select the LayoutRoot object under Objects and Timeline, you will not be able to create an Activated event handler method because that event is only valid for Window objects.

Please note that you can also see what each event does by pausing your mouse pointer over the name of an event in the Events panel, to view the tooltip for the event. Additionally, you can see even more details for each event within the Events section of MSDN.

Event

Description

Annotation.AnchorChanged

Occurs when an anchor element is added, removed, or modified.

Annotation.AuthorChanged

Occurs when an author element is added, removed, or modified.

Annotation.CargoChanged

Occurs when a Cargo element is added, removed, or modified.

AnnotationStore.AnchorChanged

Occurs when an anchor element on any annotation in the store changes.

AnnotationStore.AuthorChanged

Occurs when an author element on any annotation in the store changes.

AnnotationStore.CargoChanged

Occurs when a Cargo element on any annotation in the store changes.

AnnotationStore.StoreContentChanged

Occurs when an annotation is added to or deleted from the store.

Application.Activated

Occurs when an application becomes the foreground application.

Application.Deactivated

Occurs when an application stops being the foreground application.

Application.DispatcherUnhandledException

Occurs when an unhandled exception is raised.

Application.Exit

Occurs just before an application shuts down.

Application.FragmentNavigation

Occurs when FragmentNavigation is raised by one or more NavigationService objects within an application.

Application.LoadCompleted

Occurs when LoadCompleted is raised by one or more NavigationService objects within an application.

Application.Navigated

Occurs when Navigated is raised by one or more NavigationService objects within an application.

Application.Navigating

Occurs when Navigating is raised by one or more NavigationService objects within an application.

Application.NavigationProgress

Occurs when NavigationProgress is raised by one or more NavigationService objects within an application.

Application.NavigationStopped

Occurs when NavigationStopped is raised by one or more NavigationService objects within an application.

Application.SessionEnding

Occurs when the user ends the Windows session by logging off or by shutting down the operating system.

Application.Startup

Occurs when the Run method of the Application object is called.

BitmapDecoder.DownloadCompleted

Occurs when a BitmapDecoder has finished downloading bitmap content.

BitmapDecoder.DownloadProgress

Occurs when a BitmapDecoder has made progress downloading bitmap content.

BitmapSource.DownloadCompleted

Occurs when the bitmap content has been completely downloaded.

BitmapSource.DownloadProgress

Occurs when the download progress of the bitmap content has changed.

ButtonBase.Click

Occurs when a button is clicked.

Clock.CurrentGlobalSpeedInvalidated

Occurs when the clock's speed is updated.

Clock.CurrentStateInvalidated

Occurs when the clock's CurrentState property is updated.

Clock.CurrentTimeInvalidated

Occurs when the clock's CurrentTime becomes invalid.

CollectionView.CurrentChanged

Occurs after the CurrentItem has been changed.

CollectionView.CurrentChanging

Occurs when the currency is changing.

CollectionViewSource.Filter

Provides filtering logic.

ComboBox.DropDownClosed

Occurs when the drop-down portion of the combo box is no longer visible.

ComboBox.DropDownOpened

Occurs when the pop-up list of a combo box opens.

CommandBinding.CanExecute

Occurs when the command that is associated with this CommandBinding initiates a check to determine whether the command can be executed on the command target.

CommandBinding.Executed

Occurs when the command that is associated with this CommandBinding executes.

CommandBinding.PreviewCanExecute

Occurs when the command that is associated with this CommandBinding initiates a check to determine whether the command can be executed on the current command target.

CommandBinding.PreviewExecuted

Occurs when the command that is associated with this CommandBinding executes.

ContentElement.DragEnter

Occurs when the input system reports an underlying drag event that has this element as the drag target.

ContentElement.DragLeave

Occurs when the input system reports an underlying drag event that has this element as the drag origin.

ContentElement.DragOver

Occurs when the input system reports an underlying drag event that has this element as the potential drop target.

ContentElement.Drop

Occurs when the input system reports an underlying drop event that has this element as the drop target.

ContentElement.GiveFeedback

Occurs when the input system reports an underlying drag-and-drop event that involves this element.

ContentElement.GotFocus

Occurs when this element gets logical focus.

ContentElement.GotKeyboardFocus

Occurs when the keyboard is focused on this element.

ContentElement.GotMouseCapture

Occurs when this element captures the mouse.

ContentElement.GotStylusCapture

Occurs when this element captures the stylus.

ContentElement.IsEnabledChanged

Occurs when the value of the IsEnabled property on this element changes.

ContentElement.IsKeyboardFocusedChanged

Occurs when the value of the IsKeyboardFocused property changes on this element.

ContentElement.IsKeyboardFocusWithinChanged

Occurs when the value of the IsKeyboardFocusWithinChanged property changes on this element.

ContentElement.IsMouseCapturedChanged

Occurs when the value of the IsMouseCaptured property changes on this element.

ContentElement.IsMouseCaptureWithinChanged

Occurs when the value of the IsMouseCaptureWithinProperty field changes on this element.

ContentElement.IsMouseDirectlyOverChanged

Occurs when the value of the IsMouseDirectlyOver property changes on this element.

ContentElement.IsStylusCapturedChanged

Occurs when the value of the IsStylusCaptured property changes on this element.

ContentElement.IsStylusCaptureWithinChanged

Occurs when the value of the IsStylusCaptureWithin property changes on this element.

ContentElement.IsStylusDirectlyOverChanged

Occurs when the value of the IsStylusDirectlyOver property changes on this element.

ContentElement.KeyDown

Occurs when a key is pressed while the keyboard is focused on this element.

ContentElement.KeyUp

Occurs when a key is released while the keyboard is focused on this element.

ContentElement.LostFocus

Occurs when this element loses logical focus.

ContentElement.LostKeyboardFocus

Occurs when the keyboard is no longer focused on this element.

ContentElement.LostMouseCapture

Occurs when this element loses mouse capture.

ContentElement.LostStylusCapture

Occurs when this element loses stylus capture.

ContentElement.MouseDown

Occurs when any mouse button is pressed while the mouse pointer is over this element. If the ContentElement is a Button control, this event is not registered by Windows Presentation Foundation. Use the PreviewMouseDown or Click event instead.

ContentElement.MouseEnter

Occurs when the mouse pointer enters the bounds of this element.

ContentElement.MouseLeave

Occurs when the mouse pointer leaves the bounds of this element.

ContentElement.MouseLeftButtonDown

Occurs when the left mouse button is pressed while the mouse pointer is over this element.

ContentElement.MouseLeftButtonUp

Occurs when the left mouse button is released while the mouse pointer is over this element.

ContentElement.MouseMove

Occurs when the mouse pointer moves while it is over this element.

ContentElement.MouseRightButtonDown

Occurs when the right mouse button is pressed while the mouse pointer is over this element.

ContentElement.MouseRightButtonUp

Occurs when the right mouse button is released while the mouse pointer is over this element.

ContentElement.MouseUp

Occurs when any mouse button is released over this element.

ContentElement.MouseWheel

Occurs when the user rotates the mouse wheel while the mouse pointer is over this element.

ContentElement.PreviewDragEnter

Occurs when the input system reports an underlying drag event that has this element as the drag target.

ContentElement.PreviewDragLeave

Occurs when the input system reports an underlying drag event that has this element as the drag origin.

ContentElement.PreviewDragOver

Occurs when the input system reports an underlying drag event that has this element as the potential drop target.

ContentElement.PreviewDrop

Occurs when the input system reports an underlying drop event that has this element as the drop target.

ContentElement.PreviewGiveFeedback

Occurs when a drag-and-drop operation is started.

ContentElement.PreviewGotKeyboardFocus

Occurs when the keyboard is focused on this element.

ContentElement.PreviewKeyDown

Occurs when a key is pressed while the keyboard is focused on this element.

ContentElement.PreviewKeyUp

Occurs when a key is released while the keyboard is focused on this element.

ContentElement.PreviewLostKeyboardFocus

Occurs when the keyboard is no longer focused on this element.

ContentElement.PreviewMouseDown

Occurs when any mouse button is pressed while the mouse pointer is over this element.

ContentElement.PreviewMouseLeftButtonDown

Occurs when the left mouse button is pressed while the mouse pointer is over this element.

ContentElement.PreviewMouseLeftButtonUp

Occurs when the left mouse button is released while the mouse pointer is over this element.

ContentElement.PreviewMouseMove

Occurs when the mouse pointer moves while the mouse pointer is over this element.

ContentElement.PreviewMouseRightButtonDown

Occurs when the right mouse button is pressed while the mouse pointer is over this element.

ContentElement.PreviewMouseRightButtonUp

Occurs when the right mouse button is released while the mouse pointer is over this element.

ContentElement.PreviewMouseUp

Occurs when any mouse button is released while the mouse pointer is over this element.

ContentElement.PreviewMouseWheel

Occurs when the user rotates the mouse wheel while the mouse pointer is over this element.

ContentElement.PreviewQueryContinueDrag

Occurs when there is a change in the keyboard or mouse button state during a drag-and-drop operation.

ContentElement.PreviewStylusButtonDown

Occurs when the stylus button is pressed while the pointer is over this element.

ContentElement.PreviewStylusButtonUp

Occurs when the stylus button is released while the pointer is over this element.

ContentElement.PreviewStylusDown

Occurs when the stylus touches the digitizer while the stylus is over this element.

ContentElement.PreviewStylusInAirMove

Occurs when the stylus moves over an element without actually touching the digitizer.

ContentElement.PreviewStylusInRange

Occurs when the stylus is close enough to the digitizer to be detected, while over this element.

ContentElement.PreviewStylusMove

Occurs when the stylus moves while over the element. To raise this event, the stylus must move while being detected by the digitizer; otherwise, PreviewStylusInAirMove is raised instead.

ContentElement.PreviewStylusOutOfRange

Occurs when the stylus is too far from the digitizer to be detected.

ContentElement.PreviewStylusSystemGesture

Occurs when the user performs one of several stylus gestures.

ContentElement.PreviewStylusUp

Occurs when the user raises the stylus off the digitizer while the stylus is over this element.

ContentElement.PreviewTextInput

Occurs when this element gets text in a device-independent manner.

ContentElement.QueryContinueDrag

Occurs when there is a change in the keyboard or mouse button state during a drag-and-drop operation.

ContentElement.QueryCursor

Occurs when the cursor is requested to display. This event is raised on an element each time the mouse pointer moves to a new location, which means that the cursor object might need to be changed based on its new position.

ContentElement.StylusButtonDown

Occurs when the stylus button is pressed while the pointer is over this element.

ContentElement.StylusButtonUp

Occurs when the stylus button is released while the pointer is over this element.

ContentElement.StylusDown

Occurs when the stylus touches the digitizer while the stylus is over this element.

ContentElement.StylusEnter

Occurs when the stylus enters the bounds of this element.

ContentElement.StylusInAirMove

Occurs when the stylus moves over an element without actually touching the digitizer.

ContentElement.StylusInRange

Occurs when the stylus is close enough to the digitizer to be detected, while the stylus is over this element.

ContentElement.StylusLeave

Occurs when the stylus leaves the bounds of the element.

ContentElement.StylusMove

Occurs when the stylus moves over this element. To raise this event, the stylus must move while it is on the digitizer; otherwise, StylusInAirMove is raised instead.

ContentElement.StylusOutOfRange

Occurs when the stylus is too far from the digitizer to be detected, while the stylus is over this element.

ContentElement.StylusSystemGesture

Occurs when a user performs one of several stylus gestures.

ContentElement.StylusUp

Occurs when the user raises the stylus off the digitizer while the stylus is over this element.

ContentElement.TextInput

Occurs when this element gets text in a device-independent manner.

ContextMenu.Closed

Occurs when a particular instance of a context menu closes.

ContextMenu.Opened

Occurs when a particular instance of a context menu opens.

Control.MouseDoubleClick

Occurs when the control is double-clicked by the mouse.

Control.PreviewMouseDoubleClick

Occurs when the user clicks the mouse button two or more times.

DataSourceProvider.DataChanged

Occurs when the Data property has a new value.

DataTrigger.Invalidated

Dispatcher.ShutdownFinished

Occurs when the dispatcher finishes shutting down.

Dispatcher.ShutdownStarted

Occurs when the dispatcher begins to shut down.

Dispatcher.UnhandledException

Occurs when a thread exception is thrown and is uncaught during execution of a delegate by way of Invoke or BeginInvoke.

Dispatcher.UnhandledExceptionFilter

Occurs when a thread exception is thrown and is uncaught during execution of a delegate by way of Invoke or BeginInvoke when in the filter stage.

DispatcherHooks.DispatcherInactive

Occurs when the dispatcher has no more operations to process.

DispatcherHooks.OperationAborted

Occurs when an operation is aborted.

DispatcherHooks.OperationCompleted

Occurs when an operation completes.

DispatcherHooks.OperationPosted

Occurs when an operation is posted to the dispatcher.

DispatcherHooks.OperationPriorityChanged

Occurs when the priority of an operation is changed.

DispatcherOperation.Aborted

Occurs when the delegate on the dispatcher queue with which this DispatcherOperation is associated is aborted.

DispatcherOperation.Completed

Occurs when the delegate on the dispatcher queue to which this DispatcherOperation is associated completes.

DispatcherTimer.Tick

Occurs when the timer interval has elapsed and the timer is enabled.

DocumentPage.PageDestroyed

Occurs when the visual that depicts the DocumentPage is destroyed and can no longer be used for display.

DocumentPageView.PageConnected

Occurs when a Visual element of the DocumentPage is connected.

DocumentPageView.PageDisconnected

Occurs when a Visual element of the DocumentPage is disconnected.

DocumentPaginator.ComputePageCountCompleted

Occurs when a ComputePageCountAsync operation has finished.

DocumentPaginator.GetPageCompleted

Occurs when GetPageAsync has completed.

DocumentPaginator.PagesChanged

Occurs when the document content is changed.

DocumentReferenceCollection.CollectionChanged

Occurs when an element is added or removed.

DocumentViewerBase.PageViewsChanged

Occurs when the collection of DocumentPageView items that is associated with this viewer (represented by the PageViews property) changes.

DrawingAttributes.AttributeChanged

Occurs when a property in the DrawingAttributes object changes.

DrawingAttributes.PropertyDataChanged

Occurs when property data is added to or removed from the StrokeCollection.

DynamicDocumentPaginator.GetPageNumberCompleted

Occurs when GetPageNumberAsync has completed.

DynamicDocumentPaginator.PaginationCompleted

Occurs when all document content has been paginated.

DynamicDocumentPaginator.PaginationProgress

Occurs when one or more content pages have been paginated.

Expander.Collapsed

Occurs when the content window of an Expander control closes and only the header is visible.

Expander.Expanded

Occurs when the content window of an Expander control opens to display both its header and content.

FileDialog.FileOk

Occurs when the user selects a file name by clicking either the Open button of the OpenFileDialog or the Save button of the SaveFileDialog.

Frame.ContentRendered

Occurs after frame content has been rendered.

Frame.FragmentNavigation

Occurs when navigation to a XAML content fragment starts, which occurs after the source XAML page has been loaded.

Frame.LoadCompleted

Occurs when the entire source content has been loaded and parsed.

Frame.Navigated

Occurs when the source content is found and download begins.

Frame.Navigating

Occurs just before navigation starts.

Frame.NavigationProgress

Occurs periodically during a download to provide navigation progress information.

Frame.NavigationStopped

Occurs when the StopLoading method is called during navigation.

FrameworkContentElement.ContextMenuClosing

Occurs just before any context menu on the FrameworkContentElement is closed.

FrameworkContentElement.ContextMenuOpening

Occurs when any context menu on the FrameworkContentElement is opened.

FrameworkContentElement.DataContextChanged

Occurs when data context of the FrameworkContentElement changes.

FrameworkContentElement.Initialized

Occurs when the FrameworkContentElement is initialized. This coincides with cases where the value of the IsInitialized property changes from false (or undefined) to true.

FrameworkContentElement.Loaded

Occurs when the FrameworkContentElement is laid out, rendered, and ready for interaction.

FrameworkContentElement.SourceUpdated

Occurs when any associated data source participating in a binding on the FrameworkContentElement changes.

FrameworkContentElement.TargetUpdated

Occurs when any associated target property participating in a binding on the FrameworkContentElement changes.

FrameworkContentElement.ToolTipClosing

Occurs just before any tooltip on the FrameworkContentElement is closed.

FrameworkContentElement.ToolTipOpening

Occurs when any tooltip on the element is opened.

FrameworkContentElement.Unloaded

Occurs when the FrameworkContentElement is removed from an element tree of loaded elements.

FrameworkElement.ContextMenuClosing

Occurs just before any context menu on the FrameworkElement is closed.

FrameworkElement.ContextMenuOpening

Occurs when any context menu on the FrameworkElement is opened.

FrameworkElement.DataContextChanged

Occurs when the data context of the FrameworkElement changes.

FrameworkElement.Initialized

Occurs when the FrameworkElement is initialized. This coincides with cases where the value of the IsInitialized property changes from false (or undefined) to true.

FrameworkElement.Loaded

Occurs when the FrameworkElement is laid out, rendered, and ready for interaction.

FrameworkElement.RequestBringIntoView

Occurs when BringIntoView is called on this element.

FrameworkElement.SizeChanged

Occurs when either the ActualHeight or ActualWidth property changes value on the FrameworkElement.

FrameworkElement.SourceUpdated

Occurs when any associated data source that participates in a binding on the FrameworkElement changes.

FrameworkElement.TargetUpdated

Occurs when any associated target property that participates in a binding on the FrameworkElement changes.

FrameworkElement.ToolTipClosing

Occurs just before any tooltip on the FrameworkElement is closed.

FrameworkElement.ToolTipOpening

Occurs when any tooltip on the FrameworkElement is opened.

FrameworkElement.Unloaded

Occurs when the FrameworkElement is removed from within an element tree of loaded elements.

Freezable.Changed

Occurs when this Freezable object or an object it contains is modified.

GridViewColumnCollection.ColumnCollectionChanged

HwndHost.MessageHook

Occurs for each unhandled message that is received by the hosted window.

HwndSource.AutoResized

Occurs when layout causes the HwndSource to automatically resize.

HwndSource.Disposed

Occurs when the HwndSource object is disposed.

HwndSource.SizeToContentChanged

Occurs when the value of the SizeToContent property of the HwndSource object changes.

Hyperlink.Click

Occurs when the left mouse button is clicked.

Hyperlink.RequestNavigate

Occurs when navigation events are requested.

ICollectionView.CurrentChanged

When implementing the ICollectionView interface, raise this event after the current item has been changed.

ICommand.CanExecuteChanged

Occurs when the ability of the command to execute changes.

IInputElement.GotKeyboardFocus

Occurs when the keyboard is focused on this element.

IInputElement.GotMouseCapture

Occurs when the element captures the mouse.

IInputElement.GotStylusCapture

Occurs when the element captures the stylus.

IInputElement.KeyDown

Occurs when a key is pressed while the keyboard is focused on the element.

IInputElement.KeyUp

Occurs when a key is released while the keyboard is focused on the element.

IInputElement.LostKeyboardFocus

Occurs when the keyboard is no longer focused on the element.

IInputElement.LostMouseCapture

Occurs when the element loses mouse capture.

IInputElement.LostStylusCapture

Occurs when the element loses stylus capture.

IInputElement.MouseEnter

Occurs when the mouse pointer enters the bounds of the element.

IInputElement.MouseLeave

Occurs when the mouse pointer leaves the bounds of the element.

IInputElement.MouseLeftButtonDown

Occurs when the left mouse button is pressed while the mouse pointer is over the element.

IInputElement.MouseLeftButtonUp

Occurs when the left mouse button is released while the mouse pointer is over the element.

IInputElement.MouseMove

Occurs when the mouse pointer moves while the mouse pointer is over the element.

IInputElement.MouseRightButtonDown

Occurs when the right mouse button is pressed while the mouse pointer is over the element.

IInputElement.MouseRightButtonUp

Occurs when the right mouse button is released while the mouse pointer is over the element.

IInputElement.MouseWheel

Occurs when the mouse wheel moves while the mouse pointer is over the element.

IInputElement.PreviewGotKeyboardFocus

Occurs when the keyboard is focused on the element.

IInputElement.PreviewKeyDown

Occurs when a key is pressed while the keyboard is focused on the element.

IInputElement.PreviewKeyUp

Occurs when a key is released while the keyboard is focused on the element.

IInputElement.PreviewLostKeyboardFocus

Occurs when the keyboard is no longer focused on the element.

IInputElement.PreviewMouseLeftButtonDown

Occurs when the left mouse button is pressed while the mouse pointer is over the element.

IInputElement.PreviewMouseLeftButtonUp

Occurs when the left mouse button is released while the mouse pointer is over the element.

IInputElement.PreviewMouseMove

Occurs when the mouse pointer moves while the mouse pointer is over the element.

IInputElement.PreviewMouseRightButtonDown

Occurs when the right mouse button is pressed while the mouse pointer is over the element.

IInputElement.PreviewMouseRightButtonUp

Occurs when the right mouse button is released while the mouse pointer is over the element.

IInputElement.PreviewMouseWheel

Occurs when the mouse wheel moves while the mouse pointer is over the element.

IInputElement.PreviewStylusButtonDown

Occurs when the stylus button is pressed down while the stylus is over the element.

IInputElement.PreviewStylusButtonUp

Occurs when the stylus button is released while the stylus is over the element.

IInputElement.PreviewStylusDown

Occurs when the stylus touches the digitizer while over the element.

IInputElement.PreviewStylusInAirMove

Occurs when the stylus moves over an element without touching the digitizer.

IInputElement.PreviewStylusInRange

Occurs when the stylus is close enough to the digitizer to be detected.

IInputElement.PreviewStylusMove

Occurs when the stylus moves while the stylus is over the element.

IInputElement.PreviewStylusOutOfRange

Occurs when the stylus is too far from the digitizer to be detected.

IInputElement.PreviewStylusSystemGesture

Occurs when one of several stylus gestures are detected, for example, Tap or Drag.

IInputElement.PreviewStylusUp

Occurs when the stylus is raised off the digitizer while over the element.

IInputElement.PreviewTextInput

Occurs when the element gets text in a device-independent manner.

IInputElement.StylusButtonDown

Occurs when the stylus button is pressed while the stylus is over the element.

IInputElement.StylusButtonUp

Occurs when the stylus button is released while the stylus is over the element.

IInputElement.StylusDown

Occurs when the stylus touches the digitizer while over the element.

IInputElement.StylusEnter

Occurs when the stylus cursor enters the bounds of the element.

IInputElement.StylusInAirMove

Occurs when the stylus moves over an element without touching the digitizer.

IInputElement.StylusInRange

Occurs when the stylus is close enough to the digitizer to be detected.

IInputElement.StylusLeave

Occurs when the stylus cursor leaves the bounds of the element.

IInputElement.StylusMove

Occurs when the stylus cursor moves over the element.

IInputElement.StylusOutOfRange

Occurs when the stylus is too far from the digitizer to be detected.

IInputElement.StylusSystemGesture

Occurs when one of several stylus gestures are detected, for example, Tap or Drag.

IInputElement.StylusUp

Occurs when the stylus is raised off the digitizer while over the element.

IInputElement.TextInput

Occurs when the element gets text in a device-independent manner.

IncrementalLassoHitTester.SelectionChanged

Occurs when the lasso path selects or unselects an ink stroke.

IncrementalStrokeHitTester.StrokeHit

Occurs when the IncrementalStrokeHitTester intersects an ink stroke.

InkCanvas.ActiveEditingModeChanged

Occurs when the current editing mode changes.

InkCanvas.DefaultDrawingAttributesReplaced

Occurs when the DefaultDrawingAttributes property is replaced.

InkCanvas.EditingModeChanged

Occurs when the EditingMode property of an InkCanvas object has been changed.

InkCanvas.EditingModeInvertedChanged

Occurs when the EditingModeInverted property of an InkCanvas object has been changed.

InkCanvas.Gesture

Occurs when the InkCanvas detects a gesture.

InkCanvas.SelectionChanged

Occurs when the selection on the InkCanvas changes.

InkCanvas.SelectionChanging

Occurs when a new set of ink strokes or elements is being selected.

InkCanvas.SelectionMoved

Occurs when a selection of strokes or elements has been moved by the user.

InkCanvas.SelectionMoving

Occurs at the onset of the selected strokes and elements being moved.

InkCanvas.SelectionResized

Occurs when a selection of strokes or elements has been resized by the user.

InkCanvas.SelectionResizing

Occurs at the onset of the selected strokes and elements being resized.

InkCanvas.StrokeCollected

Occurs when a stroke that is drawn by the user is added to the Strokes property.

InkCanvas.StrokeErased

Occurs when the user erases a stroke.

InkCanvas.StrokeErasing

Occurs just before the user erases a stroke.

InkCanvas.StrokesReplaced

Occurs when the Strokes property is replaced.

INotifyCollectionChanged.CollectionChanged

Occurs when the collection changes, either by adding or removing an item.

InputLanguageManager.InputLanguageChanged

Occurs when a change of input language is completed.

InputLanguageManager.InputLanguageChanging

Occurs when a change of input language is initiated.

InputManager.HitTestInvalidatedAsync

Occurs when the result of a hit-test may have changed.

InputManager.PostNotifyInput

Occurs after the PreNotifyInput handlers have finished processing the raw input and the corresponding Windows Presentation Foundation events have been raised.

InputManager.PostProcessInput

Occurs after the PreNotifyInput handlers have finished processing the raw input.

InputManager.PreNotifyInput

Occurs when the PreProcessInput handlers have finished processing the raw input, if the raw input was not cancelled.

InputManager.PreProcessInput

Occurs when the InputManager starts to process the raw input item.

InputMethod.StateChanged

Occurs when the input method state (represented by the ImeState property) changes.

ItemContainerGenerator.ItemsChanged

Raised by a ItemContainerGenerator to inform layouts that the Items collection has changed.

ItemContainerGenerator.StatusChanged

Raised by a ItemContainerGenerator to inform controls that its status has changed.

ListBoxItem.Selected

Occurs when a ListBoxItem is selected.

ListBoxItem.Unselected

Occurs when a ListBoxItem selection is cancelled.

MediaElement.BufferingEnded

Occurs when media buffering has ended.

MediaElement.BufferingStarted

Occurs when media buffering has begun.

MediaElement.MediaEnded

Occurs when the media has ended.

MediaElement.MediaFailed

Occurs when a media error is encountered.

MediaElement.MediaOpened

Occurs when media loading has finished.

MediaPlayer.BufferingEnded

Occurs when media buffering has finished.

MediaPlayer.BufferingStarted

Occurs when media buffering has started.

MediaPlayer.MediaEnded

Occurs when the media has finished playback.

MediaPlayer.MediaFailed

Occurs when a media error is encountered.

MediaPlayer.MediaOpened

Occurs when the media is opened.

MenuItem.Checked

Occurs when a menu item is checked.

MenuItem.Click

Occurs when a menu item is clicked or selected by using a shortcut key or access key that is defined for the menu item.

MenuItem.SubmenuClosed

Occurs when the state of the IsSubmenuOpen property changes to false.

MenuItem.SubmenuOpened

Occurs when the state of the IsSubmenuOpen property changes to true.

MenuItem.Unchecked

Occurs when a menu item check box is cleared.

MultiDataTrigger.Invalidated

MultiTrigger.Invalidated

NavigationService.FragmentNavigation

Occurs when navigation to a XAML content fragment begins, which takes place after the source XAML page has been loaded.

NavigationService.LoadCompleted

Occurs when the entire source content has been loaded and parsed.

NavigationService.Navigated

Occurs when the source content is found and download begins.

NavigationService.Navigating

Occurs just before navigation starts.

NavigationService.NavigationProgress

Occurs periodically during a download to provide navigation progress information.

NavigationService.NavigationStopped

Occurs when the StopLoading method of the NavigationService object is called.

NavigationWindow.FragmentNavigation

Occurs when navigation to a XAML content fragment starts, which occurs after the source XAML page has been loaded.

NavigationWindow.LoadCompleted

Occurs when the entire source content has been loaded and parsed.

NavigationWindow.Navigated

Occurs when the source content is found and download begins.

NavigationWindow.Navigating

Occurs just before navigation starts.

NavigationWindow.NavigationProgress

Occurs periodically during a download to provide navigation progress information.

NavigationWindow.NavigationStopped

Occurs when the StopLoading method is called during navigation.

ObservableCollection`1.CollectionChanged

PackageDigitalSignatureManager.InvalidSignatureEvent

Occurs when VerifySignatures encounters an invalid signature.

PageContent.GetPageRootCompleted

Occurs when GetPageRootAsync has completed.

PageFunction`1.Return

PasswordBox.PasswordChanged

Occurs when the value of the Password property changes.

Popup.Closed

Occurs when the IsOpen property changes to false.

Popup.Opened

Occurs when the IsOpen property changes to true.

PresentationSource.ContentRendered

Occurs when content is rendered and ready for user interaction.

PrintDialogBase.PrinterChanged

PrintDialogBase.PrintTicketChanged

PrintDialogBase.PrintTicketChanging

PrintDialogBase.PropertyChanged

RangeBase.ValueChanged

Occurs when the range value changes.

RoutedCommand.CanExecuteChanged

Occurs when the ability of the command to execute on the current command target has changed.

ScrollBar.Scroll

Occurs one or more times as content scrolls in a scroll bar when the user moves the Thumb control by using the mouse.

ScrollViewer.ScrollChanged

Occurs when changes are detected to the scroll position, extent, or viewport size.

Selector.SelectionChanged

Occurs when the selection of a Selector changes.

SerializerWriter.WritingCompleted

When overridden in a derived class, occurs when a write operation finishes.

SerializerWriter.WritingPrintTicketRequired

When overridden in a derived class, occurs just before a PrintTicket is added to a stream by a Write or WriteAsync method.

SerializerWriter.WritingProgressChanged

When overridden in a derived class, occurs when the SerializerWriter updates its progress.

Stroke.DrawingAttributesChanged

Occurs when the DrawingAttributes that is associated with the Stroke object changes.

Stroke.DrawingAttributesReplaced

Occurs when the drawing attributes of a Stroke object are replaced.

Stroke.Invalidated

Occurs when the appearance of the Stroke changes.

Stroke.PropertyDataChanged

Occurs when the custom properties on a Stroke object change.

Stroke.StylusPointsChanged

Occurs when the StylusPoints property changes.

Stroke.StylusPointsReplaced

Occurs when the StylusPoints property is assigned a new StylusPointCollection.

StrokeCollection.PropertyDataChanged

Occurs when a custom property is added to or removed from the StrokeCollection.

StrokeCollection.StrokesChanged

Occurs when a Stroke in the collection changes.

StylusPointCollection.Changed

Occurs when the StylusPointCollection changes.

TextBoxBase.SelectionChanged

Occurs when the text selection has changed.

TextBoxBase.TextChanged

Occurs when content changes in the text element.

TextRange.Changed

Occurs when the range is repositioned to cover a new span of content.

Thumb.DragCompleted

Occurs when the Thumb control loses mouse capture.

Thumb.DragDelta

Occurs one or more times as the mouse changes position when a Thumb control has logical focus and mouse capture.

Thumb.DragStarted

Occurs when a Thumb control receives logical focus and mouse capture.

Timeline.CurrentGlobalSpeedInvalidated

Occurs when the rate at which time progresses for the timeline's clock changes.

Timeline.CurrentStateInvalidated

Occurs when the CurrentState property of the timeline's Clock is updated.

Timeline.CurrentTimeInvalidated

Occurs when the CurrentTime property of the timeline's Clock is updated.

ToggleButton.Checked

Occurs when a toggle button is checked.

ToggleButton.Indeterminate

Occurs when the state of a toggle button is neither on nor off.

ToggleButton.Unchecked

Occurs when a toggle button is unchecked.

ToolTip.Closed

Occurs when a tooltip is closed and is no longer visible.

ToolTip.Opened

Occurs when a tooltip becomes visible.

TreeView.SelectedItemChanged

Occurs when the selected item changes.

TreeViewItem.Collapsed

Occurs when the IsExpanded property changes from true to false.

TreeViewItem.Expanded

Occurs when the IsExpanded property changes from false to true.

TreeViewItem.Selected

Occurs when the IsSelected property of a TreeViewItem changes from false to true.

TreeViewItem.Unselected

Occurs when the IsSelected property of a TreeViewItem changes from true to false.

Trigger.Invalidated

UIElement.DragEnter

Occurs when the input system reports an underlying drag event that has this element as the drag target.

UIElement.DragLeave

Occurs when the input system reports an underlying drag event that has this element as the drag origin.

UIElement.DragOver

Occurs when the input system reports an underlying drag event that has this element as the potential drop target.

UIElement.Drop

Occurs when the input system reports an underlying drop event that has this element as the drop target.

UIElement.GiveFeedback

Occurs when the input system reports an underlying drag-and-drop event that involves this element.

UIElement.GotFocus

Occurs when this element gets logical focus.

UIElement.GotKeyboardFocus

Occurs when the keyboard is focused on this element.

UIElement.GotMouseCapture

Occurs when this element captures the mouse.

UIElement.GotStylusCapture

Occurs when this element captures the stylus.

UIElement.IsEnabledChanged

Occurs when the value of the IsEnabled property on this element changes.

UIElement.IsHitTestVisibleChanged

Occurs when the value of the IsHitTestVisible dependency property changes on this element.

UIElement.IsKeyboardFocusedChanged

Occurs when the value of the IsKeyboardFocused property changes on this element.

UIElement.IsKeyboardFocusWithinChanged

Occurs when the value of the IsKeyboardFocusWithinChanged property changes on this element.

UIElement.IsMouseCapturedChanged

Occurs when the value of the IsMouseCaptured property changes on this element.

UIElement.IsMouseDirectlyOverChanged

Occurs when the value of the IsMouseDirectlyOver property changes on this element.

UIElement.IsStylusCapturedChanged

Occurs when the value of the IsStylusCaptured property changes on this element.

UIElement.IsStylusDirectlyOverChanged

Occurs when the value of the IsStylusDirectlyOver property changes on this element.

UIElement.IsVisibleChanged

Occurs when the value of the IsVisible property changes on this element.

UIElement.KeyDown

Occurs when a key is pressed while the keyboard is focused on this element.

UIElement.KeyUp

Occurs when a key is released while the keyboard is focused on this element.

UIElement.LayoutUpdated

Occurs when the layout of the various visual elements that are associated with the current Dispatcher changes.

UIElement.LostFocus

Occurs when this element loses logical focus.

UIElement.LostKeyboardFocus

Occurs when the keyboard is no longer focused on this element.

UIElement.LostMouseCapture

Occurs when this element loses mouse capture.

UIElement.LostStylusCapture

Occurs when this element loses stylus capture.

UIElement.MouseDown

Occurs when any mouse button is pressed while the pointer is over this element. If the UIElement is a Button control, this event is not registered by Windows Presentation Foundation. Use the PreviewMouseDown or Click event instead.

UIElement.MouseEnter

Occurs when the mouse pointer enters the bounds of this element.

UIElement.MouseLeave

Occurs when the mouse pointer leaves the bounds of this element.

UIElement.MouseLeftButtonDown

Occurs when the left mouse button is pressed while the mouse pointer is over this element.

UIElement.MouseLeftButtonUp

Occurs when the left mouse button is released while the mouse pointer is over this element.

UIElement.MouseMove

Occurs when the mouse pointer moves while over this element.

UIElement.MouseRightButtonDown

Occurs when the right mouse button is pressed while the mouse pointer is over this element.

UIElement.MouseRightButtonUp

Occurs when the right mouse button is released while the mouse pointer is over this element.

UIElement.MouseUp

Occurs when any mouse button is released over this element.

UIElement.MouseWheel

Occurs when the user rotates the mouse wheel while the mouse pointer is over this element.

UIElement.PreviewDragEnter

Occurs when the input system reports an underlying drag event that has this element as the drag target.

UIElement.PreviewDragLeave

Occurs when the input system reports an underlying drag event that has this element as the drag origin.

UIElement.PreviewDragOver

Occurs when the input system reports an underlying drag event that has this element as the potential drop target.

UIElement.PreviewDrop

Occurs when the input system reports an underlying drop event that has this element as the drop target.

UIElement.PreviewGiveFeedback

Occurs when a drag-and-drop operation is started.

UIElement.PreviewGotKeyboardFocus

Occurs when the keyboard is focused on this element.

UIElement.PreviewKeyDown

Occurs when a key is pressed while the keyboard is focused on this element.

UIElement.PreviewKeyUp

Occurs when a key is released while the keyboard is focused on this element.

UIElement.PreviewLostKeyboardFocus

Occurs when the keyboard is no longer focused on this element.

UIElement.PreviewMouseDown

Occurs when any mouse button is pressed while the pointer is over this element.

UIElement.PreviewMouseLeftButtonDown

Occurs when the left mouse button is pressed while the mouse pointer is over this element.

UIElement.PreviewMouseLeftButtonUp

Occurs when the left mouse button is released while the mouse pointer is over this element.

UIElement.PreviewMouseMove

Occurs when the mouse pointer moves while the mouse pointer is over this element.

UIElement.PreviewMouseRightButtonDown

Occurs when the right mouse button is pressed while the mouse pointer is over this element.

UIElement.PreviewMouseRightButtonUp

Occurs when the right mouse button is released while the mouse pointer is over this element.

UIElement.PreviewMouseUp

Occurs when any mouse button is released while the mouse pointer is over this element.

UIElement.PreviewMouseWheel

Occurs when the user rotates the mouse wheel while the mouse pointer is over this element.

UIElement.PreviewQueryContinueDrag

Occurs when there is a change in the keyboard or mouse button state during a drag-and-drop operation.

UIElement.PreviewStylusButtonDown

Occurs when the stylus button is pressed while the pointer is over this element.

UIElement.PreviewStylusButtonUp

Occurs when the stylus button is released while the pointer is over this element.

UIElement.PreviewStylusDown

Occurs when the stylus touches the digitizer while the stylus is over this element.

UIElement.PreviewStylusInAirMove

Occurs when the stylus moves over an element without actually touching the digitizer.

UIElement.PreviewStylusInRange

Occurs when the stylus is close enough to the digitizer to be detected, while over this element.

UIElement.PreviewStylusMove

Occurs when the stylus moves while over the element. The stylus must move while being detected by the digitizer to raise this event; otherwise, PreviewStylusInAirMove is raised instead.

UIElement.PreviewStylusOutOfRange

Occurs when the stylus is too far from the digitizer to be detected.

UIElement.PreviewStylusSystemGesture

Occurs when a user performs one of several stylus gestures.

UIElement.PreviewStylusUp

Occurs when the user raises the stylus off the digitizer while the stylus is over this element.

UIElement.PreviewTextInput

Occurs when the element gets text in a device-independent manner.

UIElement.QueryContinueDrag

Occurs when there is a change in the keyboard or mouse button state during a drag-and-drop operation.

UIElement.QueryCursor

Occurs when the cursor is requested to display. This event is raised on an element each time the mouse pointer moves to a new location, which means that the cursor object might need to be changed based on its new position.

UIElement.StylusButtonDown

Occurs when the stylus button is pressed while the pointer is over this element.

UIElement.StylusButtonUp

Occurs when the stylus button is released while the pointer is over this element.

UIElement.StylusDown

Occurs when the stylus touches the digitizer while the stylus is over this element.

UIElement.StylusEnter

Occurs when the stylus enters the bounds of this element.

UIElement.StylusInAirMove

Occurs when the stylus moves over an element without actually touching the digitizer.

UIElement.StylusInRange

Occurs when the stylus is close enough to the digitizer to be detected, while over this element.

UIElement.StylusLeave

Occurs when the stylus leaves the bounds of the element.

UIElement.StylusMove

Occurs when the stylus moves over this element. The stylus must move while on the digitizer to raise this event; otherwise, StylusInAirMove is raised instead.

UIElement.StylusOutOfRange

Occurs when the stylus is too far from the digitizer to be detected, while over this element.

UIElement.StylusSystemGesture

Occurs when a user performs one of several stylus gestures.

UIElement.StylusUp

Occurs when the user raises the stylus off the digitizer while it is over this element.

UIElement.TextInput

Occurs when the element gets text in a device-independent manner.

Window.Activated

Occurs when a window becomes the foreground window.

Window.Closed

Occurs when the window as about to close.

Window.Closing

Occurs directly after Close is called, and can be handled to cancel window closure.

Window.ContentRendered

Occurs after a window's content has been rendered.

Window.Deactivated

Occurs when a window becomes a background window.

Window.LocationChanged

Occurs when the window's location changes.

Window.SourceInitialized

Occurs after the window's HwndSource object is created, but before the window is shown.

Window.StateChanged

Occurs when the window's WindowState property changes.

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