Section 12.3. Event Reference

12.3. Event Reference

Click

---

Routed Event

Yes

Elements

 MenuItem Hyperlink ButtonBase 

Description

Click is raised on an element's MouseLeftButtonDown and MouseRightButtonDown events.

Event Argument Type

 RoutedEventArgs 

Closed

---

Routed Event

Yes

Elements

 ContextMenu ToolTip Popup Pag Windo NavigationWindow 

Description

Closed is raised when the element has closed.

Event Argument Type

 RoutedEventArgs 

DragEnter

---

Routed Event

Yes

Elements

 UIElement 

Description

DragEnter is raised when an underlying system drag event is raised, with either this element or a child element along the route as the target. The corresponding event is PreviewDragEnter.

Event Argument Type

 RoutedEventArgs 

DragLeave

---

Routed event

Yes

Elements

 UIElement 

Description

DragLeave is raised when an underlying system drag event is raised, with either this element or a child element along the route identified as the origin. The corresponding event is PreviewDragLeave.

Event Argument Type

 RoutedEventArgs 

DragOver

---

Routed Event

Yes

Elements

 UIElement 

Description

DragOver is raised when an underlying system drag event is raised, with either this element or a child element along the route as the target. The corresponding event is PreviewDragOver. This event is raised even if the origin of the drag event is within the boundaries of the element.

Event Argument Type

 RoutedEventArgs 

Drop

---

Routed Event

Yes

Elements

 UIElement 

Description

Drop is raised when an underlying system drop event is raised, with either this element or a child element along the route as the target. The corresponding event is PreviewDrop.

Event Argument Type

 RoutedEventArgs 

GotFocus

---

Routed Event

Yes

Elements

 UIElement 

Description

GotFocus is a routed event that occurs when the element receives focus. The corresponding event is PreviewGotFocus. It uses a bubbling event strategy.

Event Argument Type

 RoutedEventArgs 

IsCheckedChanged

---

Routed event

Yes

Elements

 ToggleButton MenuItem 

Description

IsCheckedChanged is raised when the IsChecked attribute of an element changes state.

Event Argument Type

 RoutedEventArgs 

IsEnabledChanged

---

Routed event

No

Elements

 UIElement 

Description

IsEnabledChanged is raised when the IsEnabled attribute of an element changes state.

Event Argument Type

 DependencyPropertyChangedEventArgs 

IsFocusChanged

---

Routed event

No

Elements

 UIElement 

Description

IsFocusChanged is raised when the IsFocused attribute of an element changes state.

Event Argument Type

 DependencyPropertyChangedEventArgs 

IsMouseDirectlyOverChanged

---

Routed event

No

Elements

 UIElement 

Description

IsMouseDirectlyOverChanged is raised when the IsMouseDirectlyOver attribute of an element changes state.

Event Argument Type

 DependencyPropertyChangedEventArgs 

IsVisibleChanged

---

Routed event

No

Elements

 UIElement 

Description

IsVisibleChanged is raised when the IsVisible attribute of an element changes state.

Event Argument Type

 DependencyPropertyChangedEventArgs 

KeyDown

---

Routed Event

Yes

Elements

 UIElement 

Description

KeyDown is raised when a key is pressed while the element or a child element has focus. KeyDown uses a bubbling event strategy. The corresponding event is PreviewKeyDown.

Event Argument Type

 KeyEventArgs 

KeyUp

---

Routed Event

Yes

Elements

 UIElement 

Description

KeyUp is raised when a key is released while the element or a child element has focus. KeyUp uses a bubbling event strategy. The corresponding event is PreviewKeyUp.

Event Argument Type

 KeyEventArgs 

LayoutUpdated

---

Routed event

No

Elements

 UIElement 

Description

LayoutUpdated is raised when the layout of the element has been altered because a property, such as Width or Content, was changed; because a window was resized; or because the user specifically requested the layout update.

Event Argument Type

 DependencyPropertyChangedEventArgs 

LostFocus

---

Routed Event

Yes

Elements

 UIElement 

Description

LostFocus is a routed event that occurs when the element loses focus. The corresponding event is PreviewLostFocus. It uses a bubbling event strategy.

Event Argument Type

 RoutedEventArgs 

MouseEnter

---

Routed Event

Yes

Elements

 UIElement 

Description

MouseEnter is raised when the mouse pointer enters the boundaries of the element to which it is attached. It uses a direct routing strategy, so it is handled only in the element in which it was raised, but it does enable other routed event behaviors (such as event triggers in styles).

Event Argument Type

 RoutedEventArgs 

MouseLeave

---

Routed Event

Yes

Elements

 UIElement 

Description

MouseLeave is raised when the mouse pointer leaves the boundaries of the element to which it is attached. It uses a direct routing strategy, so it is handled only in the element in which it was raised, but it does enable other routed event behaviors (such as event triggers in styles).

Event Argument Type

 MouseEventArgs 

MouseMove

---

Routed Event

Yes

Elements

 UIElement 

Description

MouseMove is raised when the mouse pointer moves over the element or a child element along the route. It uses a bubbling strategy. The corresponding event is PreviewMouseMove.

Event Argument Type

 MouseEventArgs 

MouseLeftButtonDown

---

Routed Event

No

Elements

 UIElement 

Description

MouseLeftButtonDown is raised when the left mouse button is clicked over an element.

Event Argument Type

 MouseButtonEventArgs 

MouseLeftButtonUp

---

Routed Event

No

Elements

 UIElement 

Description

MouseLeftButtonUp is raised when the left mouse button is released while it is over the element.

Event Argument Type

 MouseButtonEventArgs 

MouseRightButtonDown

---

Routed Event

No

Elements

 UIElement 

Description

MouseRightButtonDown is raised when the right mouse button is clicked while it is over the element.

Event Argument Type

 MouseButtonEventArgs 

MouseRightButtonUp

---

Routed Event

No

Elements

 UIElement 

Description

MouseRightButtonUp is raised when the right mouse button is released while it is over an element.

Event Argument Type

 MouseButtonEventArgs 

Opened

---

Routed Event

Yes

Elements

 ContextMenu Popup Tooltip 

Description

Opened is raised when the element opens.

Event Argument Type

 RoutedEventArgs 

SelectionChanged

---

Routed event

Yes

Elements

 TextBoxBase Selector 

Description

SelectionChanged is raised whenever a selection is changed, whether through binding, user interaction, or programmatically. It uses a bubble routing strategy.

Event Argument Type

 SelectionChangedEventArgs 

ScrollChanged

---

Routed Event

Yes

Elements

 ScrollViewer 

Description

ScrollChanged is raised when the scroll state has changed.

Event Argument Type

 ScrollChangedEventArgs 

TextChanged

---

Routed Event

Yes

Elements

 TextBoxBase 

Description

TextChanged is raised when the text in the element changes either through user interaction or programmatically. This is raised even when the element is initially created and the text is populated.

Event Argument Type

TextChangedEventArgs