ContextMenuService Class
Provides the system implementation for displaying a ContextMenu.
Assembly: PresentationFramework (in PresentationFramework.dll)
The ContextMenuService type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | ContextMenu | Gets or sets the content of a ContextMenu. |
![]() | HasDropShadow | Gets or sets a value that indicates whether the ContextMenu has the drop shadow effect enabled. |
![]() | HorizontalOffset | Gets or sets a value that indicates where along the x-direction to place the ContextMenu with respect to the parent control. |
![]() | IsEnabled | Gets or sets a value that indicates whether the ContextMenu can be shown. |
![]() | Placement | Gets or sets a value that specifies the placement of the ContextMenu relative to the PlacementTarget or PlacementRectangle. |
![]() | PlacementRectangle | Gets or sets the area relative to which the context menu is positioned when it opens. |
![]() | PlacementTarget | Gets or sets the parent control of the ContextMenu. |
![]() | ShowOnDisabled | Gets or sets a value that indicates whether the ContextMenu should be shown when its parent is grayed out. |
![]() | VerticalOffset | Gets or sets a value that indicates where along the y-direction to place the ContextMenu with respect to the parent control. |
| Name | Description | |
|---|---|---|
![]() ![]() | GetContextMenu | Gets the value of the ContextMenu property of the specified object. |
![]() ![]() | GetHasDropShadow | Gets a value that indicates whether the ContextMenu has a drop shadow. |
![]() ![]() | GetHorizontalOffset | Gets the value of the HorizontalOffset property of the specified object. |
![]() ![]() | GetIsEnabled | Gets the value of the IsEnabled property of the specified object. |
![]() ![]() | GetPlacement | Gets the value of the Placement property of the specified object. |
![]() ![]() | GetPlacementRectangle | Gets the value of the PlacementRectangle property of the specified object. |
![]() ![]() | GetPlacementTarget | Gets the value of the PlacementTarget property of the specified object. |
![]() ![]() | GetShowOnDisabled | Gets the value of the ShowOnDisabled property of the specified object. |
![]() ![]() | GetVerticalOffset | Gets the value of the VerticalOffset property of the specified object. |
![]() ![]() | SetContextMenu | Sets the value of the ContextMenu property of the specified object. |
![]() ![]() | SetHasDropShadow | Sets a value that indicates whether the ContextMenu has a drop shadow. |
![]() ![]() | SetHorizontalOffset | Sets the value of the HorizontalOffset property of the specified object. |
![]() ![]() | SetIsEnabled | Sets the value of the IsEnabled property of the specified object. |
![]() ![]() | SetPlacement | Sets the value of the Placement property of the specified object. |
![]() ![]() | SetPlacementRectangle | Sets the value of the PlacementRectangle property of the specified object. |
![]() ![]() | SetPlacementTarget | Sets the value of the PlacementTarget property of the specified object. |
![]() ![]() | SetShowOnDisabled | Sets the value of the ShowOnDisabled property of the specified object. |
![]() ![]() | SetVerticalOffset | Sets the value of the VerticalOffset property of the specified object. |
| Name | Description | |
|---|---|---|
![]() ![]() | ContextMenuClosingEvent | Identifies the ContextMenuClosing routed event, as exposed on classes that implement this event. |
![]() ![]() | ContextMenuOpeningEvent | Identifies the ContextMenuOpening routed event, as exposed on classes that implement this event. |
![]() ![]() | ContextMenuProperty | Identifies the ContextMenu attached property. |
![]() ![]() | HasDropShadowProperty | Identifies the HasDropShadow attached property. |
![]() ![]() | HorizontalOffsetProperty | Identifies the HorizontalOffset attached property. |
![]() ![]() | IsEnabledProperty | Identifies the IsEnabled attached property. |
![]() ![]() | PlacementProperty | Identifies the Placement attached property. |
![]() ![]() | PlacementRectangleProperty | Identifies the PlacementRectangle attached property. |
![]() ![]() | PlacementTargetProperty | Identifies the PlacementTarget attached property. |
![]() ![]() | ShowOnDisabledProperty | Identifies the ShowOnDisabled attached property. |
![]() ![]() | VerticalOffsetProperty | Identifies the VerticalOffset attached property. |
The ContextMenuService class provides attached properties that can be used to specify the appearance and position of a context menu. Many of the properties in the ContextMenuService class are also defined by the ContextMenu. Sometimes it is more convenient to set the properties by using the ContextMenuService class than by setting the properties on a ContextMenu. For example, you can create a ContextMenu to be shared by multiple elements, but use the ContextMenuService class to specify a different position of the ContextMenu for each element. The following properties are defined by the ContextMenu and ContextMenuService classes. If any of these properties are set on both ContextMenu and the ContextMenuService, the property value from the ContextMenuService is used.
You can also use the ContextMenuService to display menus on disabled items.
The following example assigns the same ContextMenu to two buttons and sets the HasDropShadow, Placement, PlacementRectangle, HorizontalOffset, and VerticalOffset properties to set the ContextMenu to different positions for each button.
<StackPanel> <StackPanel.Resources> <ContextMenu x:Key="myContextMenu"> <MenuItem Header="Item"/> </ContextMenu> </StackPanel.Resources> <!--Both buttons use the same ContextMenu but use the properties on ContextMenuService to position them differently.--> <Button ContextMenu="{StaticResource myContextMenu}" ContextMenuService.HasDropShadow="False" ContextMenuService.Placement="Relative" ContextMenuService.HorizontalOffset="50" ContextMenuService.VerticalOffset="-10"> button 1 </Button> <Button ContextMenu="{StaticResource myContextMenu}" ContextMenuService.HasDropShadow="True" ContextMenuService.Placement="Right" ContextMenuService.PlacementRectangle="0,0,30,30"> button 2 </Button> </StackPanel>
The following example shows how to use the service to display a ContextMenu on a disabled button. Notice that you set the ShowOnDisabled property on the button that is the parent of the context menu.
<Button Height="30" Content="Disabled Button" IsEnabled="False" ContextMenuService.ShowOnDisabled="True"> <Button.ContextMenu> <ContextMenu> <MenuItem Header="Item 1"/> <MenuItem Header="Item 2"/> <MenuItem Header="Item 3"/> </ContextMenu> </Button.ContextMenu> </Button>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
