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/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class ComboBoxItem : SelectorItem
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public class ComboBoxItem : SelectorItem
Public Class ComboBoxItem
Inherits SelectorItem
<ComboBoxItem .../>
<ComboBoxItem ...>
  content
</ComboBoxItem>
			
Inheritance
Object IInspectable DependencyObject UIElement FrameworkElement Control ContentControl SelectorItem ComboBoxItem

For more info, design guidance, and code examples, see Combo box.

If you have the WinUI 2 Gallery app installed, click here to open the app and see the ComboBox in action.

  • Get the WinUI 2 Gallery app (Microsoft Store)
  • Get the source code (GitHub)
  • Remarks

    The ComboBoxItem class provides the container for items displayed in a ComboBox control. You populate the ComboBox by adding objects directly to its Items collection or by binding its ItemsSource property to a data source. When items are added to the ComboBox, a ComboBoxItem container is created automatically for each item in the collection.

    You can specify the look of the ComboBoxItem by setting the ComboBox's ItemContainerStyle property to a Style with a TargetType of ComboBoxItem.

    Control style and template

    You can modify the default Style and ControlTemplate to give the control a unique appearance. For information about modifying a control's style and template, see XAML styles. XAML also includes resources that you can use to modify the colors of a control in different visual states without modifying the control template. Modifying these resources is preferred to setting properties such as Background and Foreground. For more info, see the Light-weight styling section of the XAML styles article.

    WinUI Styles (recommended): When you use the updated styles from WinUI 2.6 or later, the resources for this control are listed in the ThemeDictionaries section of the ComboBox_themeresources.xaml file on GitHub. The ResourceKey value for each StaticResource references a brush and color in the Common_themeresources_any.xaml file.

    Non-WinUI styles: When you use the built-in styles, the default style, template, and resources that define the look of the control are included in the generic.xaml file. For design purposes, generic.xaml is available in the (Program Files)\Windows Kits\10\DesignTime\CommonConfiguration\Neutral\UAP\ <SDK version>\Generic folder from a Windows SDK installation. Light-weight styling resources are available starting in Windows 10, version 1607 (SDK 14393). Styles and resources from different versions of the SDK might have different values.

    Gets or sets a source element that provides the access key scope for this element, even if it's not in the visual tree of the source element.

    (Inherited from UIElement)

    Gets the position of this UIElement, relative to its parent, computed during the arrange pass of the layout process.

    (Inherited from UIElement)

    Gets the size that this UIElement computed during the arrange pass of the layout process.

    (Inherited from UIElement)

    Gets the UI theme that is currently used by the element, which might be different than the RequestedTheme.

    (Inherited from FrameworkElement)

    Gets or sets a value that determines whether this UIElement can be a drop target for purposes of drag-and-drop operations.

    (Inherited from UIElement)

    Gets or sets a value that indicates whether the element automatically gets focus when the user interacts with it.

    (Inherited from FrameworkElement)

    Gets or sets a value that indicates how far the background extends in relation to this element's border.

    (Inherited from Control)

    Gets a Uniform Resource Identifier (URI) that represents the base Uniform Resource Identifier (URI) for an XAML-constructed object at XAML load time. This property is useful for Uniform Resource Identifier (URI) resolution at run time.

    (Inherited from FrameworkElement)

    Gets or sets a value that indicates that rendered content should be cached as a composited bitmap when possible.

    (Inherited from UIElement)

    Gets or sets a value that indicates whether the UIElement can be a candidate for scroll anchoring.

    (Inherited from UIElement)

    Gets or sets a value that indicates whether the element can be dragged as data in a drag-and-drop operation.

    (Inherited from UIElement)

    Gets or sets the center point of the element, which is the point about which rotation or scaling occurs. Affects the rendering position of the element.

    (Inherited from UIElement)

    Gets or sets the RectangleGeometry used to define the outline of the contents of a UIElement.

    (Inherited from UIElement)

    Gets or sets a property that declares alternate composition and blending modes for the element in its parent layout and window. This is relevant for elements that are involved in a mixed XAML / Microsoft DirectX UI.

    (Inherited from UIElement)

    Gets or sets the data template that is used to display the content of the ContentControl.

    (Inherited from ContentControl)

    Gets or sets a selection object that changes the DataTemplate to apply for content, based on processing information about the content item or its container at run time.

    (Inherited from ContentControl)

    Gets or sets the collection of Transition style elements that apply to the content of a ContentControl.

    (Inherited from ContentControl)

    Gets or sets the data context for a FrameworkElement. A common use of a data context is when a FrameworkElement uses the {Binding} markup extension and participates in data binding.

    (Inherited from FrameworkElement)

    Gets or sets the key that references the default style for the control. Authors of custom controls use this property to change the default for the style that their control uses.

    (Inherited from Control)

    Gets or sets the path to the resource file that contains the default style for the control.

    (Inherited from Control)

    Gets the size that this UIElement computed during the measure pass of the layout process.

    (Inherited from UIElement)

    Gets the CoreDispatcher that this object is associated with. The CoreDispatcher represents a facility that can access the DependencyObject on the UI thread even if the code is initiated by a non-UI thread.

    (Inherited from DependencyObject)

    Gets or sets a value that specifies whether the access key display is dismissed when an access key is invoked.

    (Inherited from UIElement)

    Gets or sets the direction in which text and other UI elements flow within any parent element that controls their layout. This property can be set to either LeftToRight or RightToLeft. Setting FlowDirection to RightToLeft on any element sets the alignment to the right, the reading order to right-to-left and the layout of the control to flow from right to left.

    (Inherited from FrameworkElement)

    Gets a value that specifies whether this control has focus, and the mode by which focus was obtained.

    (Inherited from Control)

    Gets or sets the brush used to draw the outer border of a HighVisibility or Reveal focus visual for a FrameworkElement.

    (Inherited from FrameworkElement)

    Gets or sets the thickness of the outer border of a HighVisibility or Reveal focus visual for a FrameworkElement.

    (Inherited from FrameworkElement)

    Gets or sets the brush used to draw the inner border of a HighVisibility or Reveal focus visual for a FrameworkElement.

    (Inherited from FrameworkElement)

    Gets or sets the thickness of the inner border of a HighVisibility or Reveal focus visual for a FrameworkElement.

    (Inherited from FrameworkElement)

    Gets or sets a value that indicates whether the framework automatically adjusts the element's visual properties when high contrast themes are enabled.

    (Inherited from UIElement)

    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)

    Gets or sets a value that determines whether the DoubleTapped event can originate from that element.

    (Inherited from UIElement)

    Get or sets a value that indicates whether focus is constrained within the control boundaries (for game pad/remote interaction).

    (Inherited from Control)

    Get or sets a value that indicates whether focus can be constrained within the control boundaries (for game pad/remote interaction).

    (Inherited from Control)

    Gets or sets whether the contained area of this UIElement can return true values for hit testing.

    (Inherited from UIElement)

    Gets or sets a value that determines whether the Holding event can originate from that element.

    (Inherited from UIElement)

    Gets a value that indicates whether the element has been added to the element tree and is ready for interaction.

    (Inherited from FrameworkElement)

    Gets or sets a value that determines whether the RightTapped event can originate from that element.

    (Inherited from UIElement)

    Gets or sets a value that determines whether the Tapped event can originate from that element.

    (Inherited from UIElement)

    Gets or sets whether automatic text enlargement, to reflect the system text size setting, is enabled.

    (Inherited from Control)

    Gets or sets a value that indicates whether the control tooltip displays the key combination for its associated keyboard accelerator.

    (Inherited from UIElement)

    Gets or sets a value that indicates the control tooltip that displays the accelerator key combination.

    (Inherited from UIElement)

    Gets the collection of key combinations that invoke an action using the keyboard.

    Accelerators are typically assigned to buttons or menu items.

    Example of a menu showing keyboard accelerators for various menu items

    (Inherited from UIElement)

    Gets or sets a value that indicates how far left or right the Key Tip is placed in relation to the UIElement.

    (Inherited from UIElement)

    Gets or sets a value that indicates where the access key Key Tip is placed in relation to the boundary of the UIElement.

    (Inherited from UIElement)

    Gets or sets a value that indicates how far up or down the Key Tip is placed in relation to the UI element.

    (Inherited from UIElement)

    Gets or sets localization/globalization language information that applies to a FrameworkElement, and also to all child elements of the current FrameworkElement in the object representation and in UI.

    (Inherited from FrameworkElement)

    Gets or sets the ManipulationModes value used for UIElement behavior and interaction with gestures. Setting this value enables handling the manipulation events from this element in app code.

    (Inherited from UIElement)

    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)

    Gets or sets the perspective projection (3-D effect) to apply when rendering this element.

    (Inherited from UIElement)

    Gets or sets the origin point of any possible render transform declared by RenderTransform, relative to the bounds of the UIElement.

    (Inherited from UIElement)

    Gets or sets the UI theme that is used by the UIElement (and its child elements) for resource determination. The UI theme you specify with RequestedTheme can override the app-level RequestedTheme.

    (Inherited from FrameworkElement)

    Gets or sets whether a UI element supports mouse mode, which emulates pointer interaction experiences with non-pointer input devices such as an Xbox gamepad or remote control.

    (Inherited from Control)

    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)

    Gets or sets the angle of clockwise rotation, in degrees. Rotates relative to the RotationAxis and the CenterPoint. Affects the rendering position of the element.

    (Inherited from UIElement)

    Gets or sets the scale of the element. Scales relative to the element's CenterPoint. Affects the rendering position of the element.

    (Inherited from UIElement)

    Gets or sets an instance Style that is applied for this object during layout and rendering.

    (Inherited from FrameworkElement)

    Gets or sets a value that indicates the order in which elements receive focus when the user navigates through the app UI using the Tab key.

    (Inherited from Control)

    For Windows 10 Creators Update (build 10.0.15063) and newer, the TabFocusNavigation property is available on the UIElement base class to include objects in the tab sequence that do not use a ControlTemplate.

    (Inherited from Control)

    Gets or sets an arbitrary object value that can be used to store custom information about this object.

    (Inherited from FrameworkElement)

    Gets or sets a control template. The control template defines the visual appearance of a control in UI, and is defined in XAML markup.

    (Inherited from Control)

    Gets the collection of triggers for animations that are defined for a FrameworkElement. Not commonly used. See Remarks.

    (Inherited from FrameworkElement)

    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)

    Gets or sets a value that indicates whether the control uses focus visuals that are drawn by the system or those defined in the control template.

    (Inherited from Control)

    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)

    Gets or sets the visibility of a UIElement. A UIElement that is not visible is not rendered and does not communicate its desired size to layout.

    (Inherited from UIElement)

    Gets or sets the object that gets focus when a user presses the Directional Pad (D-pad) down.

    (Inherited from Control)

    Gets or sets a value that specifies the strategy used to determine the target element of a down navigation.

    (Inherited from UIElement)

    Gets or sets a value that enables or disables navigation using the keyboard directional arrows.

    (Inherited from UIElement)

    Gets or sets the object that gets focus when a user presses the Directional Pad (D-pad) left.

    (Inherited from Control)

    Gets or sets a value that specifies the strategy used to determine the target element of a left navigation.

    (Inherited from UIElement)

    Gets or sets the object that gets focus when a user presses the Directional Pad (D-pad) right.

    (Inherited from Control)

    Gets or sets a value that specifies the strategy used to determine the target element of a right navigation.

    (Inherited from UIElement)

    Gets or sets the object that gets focus when a user presses the Directional Pad (D-pad) up.

    (Inherited from Control)

    Gets or sets a value that specifies the strategy used to determine the target element of an up navigation.

    (Inherited from UIElement)

    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 even if the event is handled elsewhere.

    (Inherited from UIElement)

    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)

    Provides the behavior for the "Arrange" pass of layout. Classes can override this method to define their own "Arrange" pass behavior.

    (Inherited from FrameworkElement)

    Cancels ongoing direct manipulation processing (system-defined panning/zooming) on any ScrollViewer parent that contains the current UIElement.

    (Inherited from UIElement)

    Sets pointer capture to a UIElement. Once captured, only the element that has capture will fire pointer-related events.

    (Inherited from UIElement)

    Enables a UIElement subclass to expose child elements that assist with resolving touch targeting.

    (Inherited from UIElement)

    Returns any base value established for a dependency property, which would apply in cases where an animation is not active.

    (Inherited from DependencyObject)

    When implemented in a derived class, enables per-state construction of a visual tree for a control template in code, rather than by loading XAML for all states at control startup.

    (Inherited from FrameworkElement)

    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)

    Invalidates the viewport state for a UIElement that is used to calculate the effective viewport.

    (Inherited from FrameworkElement)

    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)

    Provides the behavior for the "Measure" pass of the layout cycle. Classes can override this method to define their own "Measure" pass behavior.

    (Inherited from FrameworkElement)

    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 your app. Override this method to influence the default post-template logic of a class.

    (Inherited from FrameworkElement)

    When implemented in a derived class, returns class-specific AutomationPeer implementations for the Microsoft UI Automation infrastructure.

    (Inherited from UIElement)

    Override this method to implement how layout and logic should behave when items are removed from a class-specific content or children property.

    (Inherited from UIElement)

    Called when a keyboard shortcut (or accelerator) is processed in your app. Override this method to handle how your app responds when a keyboard accelerator is invoked.

    (Inherited from UIElement)

    Called just before a keyboard shortcut (or accelerator) is processed in your app. Invoked whenever application code or internal processes call ProcessKeyboardAccelerators. Override this method to influence the default accelerator handling.

    (Inherited from UIElement)

    Registers a notification function for listening to changes to a specific DependencyProperty on this DependencyObject instance.

    (Inherited from DependencyObject)

    Releases focus from the control boundaries for a control that has focus engagement (for game pad/remote interaction).

    (Inherited from Control)

    Removes the specified routed event handler from this UIElement. Typically the handler in question was added by AddHandler.

    (Inherited from UIElement)

    Initiates a request to the XAML framework to bring the element into view within any scrollable regions it is contained within.

    (Inherited from UIElement)

    Initiates a request to the XAML framework to bring the element into view using the specified options.

    (Inherited from UIElement)

    Returns a transform object that can be used to transform coordinates from the UIElement to the specified object.

    (Inherited from UIElement)

    Attempts to invoke a keyboard shortcut (or accelerator) by searching the entire visual tree of the UIElement for the shortcut.

    (Inherited from UIElement)

    Cancels a change notification that was previously registered by calling RegisterPropertyChangedCallback.

    (Inherited from DependencyObject)

    Ensures that all positions of child objects of a UIElement are properly updated for layout.

    (Inherited from UIElement)

    Occurs when a context input gesture continues into a manipulation gesture, to notify the element that the context flyout should not be opened.

    (Inherited from UIElement)

    Occurs when an otherwise unhandled DoubleTap interaction occurs over the hit test area of this element.

    (Inherited from UIElement)

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

    (Inherited from UIElement)

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

    (Inherited from UIElement)

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

    (Inherited from UIElement)

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

    (Inherited from UIElement)

    Occurs when focus is released from the control boundaries (for game pad/remote interaction).

    (Inherited from Control)

    Occurs when focus is constrained within the control boundaries (for game pad/remote interaction).

    (Inherited from Control)

    Occurs before a UIElement receives focus. This event is raised synchronously to ensure focus isn't moved while the event is bubbling.

    (Inherited from UIElement)

    Occurs when a UIElement receives focus. This event is raised asynchronously, so focus can move again before bubbling is complete.

    (Inherited from UIElement)

    Occurs when an otherwise unhandled Hold interaction occurs over the hit test area of this element.

    (Inherited from UIElement)

    Occurs when the layout of the visual tree changes, due to layout-relevant properties changing value or some other action that refreshes the layout.

    (Inherited from FrameworkElement)

    Occurs when a FrameworkElement has been constructed and added to the object tree, and is ready for interaction.

    (Inherited from FrameworkElement)

    Occurs before a UIElement loses focus. This event is raised synchronously to ensure focus isn't moved while the event is bubbling.

    (Inherited from UIElement)

    Occurs when a UIElement loses focus. This event is raised asynchronously, so focus can move again before bubbling is complete.

    (Inherited from UIElement)

    Occurs when the input device loses contact with the UIElement object during a manipulation and inertia begins.

    (Inherited from UIElement)

    Occurs when a user attempts to move focus (via tab or directional arrows), but focus doesn't move because no focus candidate is found in the direction of movement.

    (Inherited from UIElement)

    Occurs when pointer capture previously held by this element moves to another element or elsewhere.

    (Inherited from UIElement)

    Occurs when a pointer moves while the pointer remains within the hit test area of this element.

    (Inherited from UIElement)

    Occurs when the pointer device that previously initiated a Press action is released, while within this element. Note that the end of a Press action is not guaranteed to fire a PointerReleased event; other events may fire instead. For more info, see Remarks.

    (Inherited from UIElement)

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

    (Inherited from FrameworkElement)

    Occurs when an otherwise unhandled Tap interaction occurs over the hit test area of this element.

    (Inherited from UIElement)