Windows.UI.Xaml Namespace

Provides general framework APIs and application model APIs, and a variety of support classes that are commonly used by many different feature areas.

Classes

AdaptiveTrigger

Represents a declarative rule that applies visual states based on window properties.

Application

Encapsulates the app and its available services.

ApplicationInitializationCallbackParams

A class that developers should derive from in order to pass information for a custom initialization sequence, in cases where both an Application subclass is present and the entry point Start call is adjusted to pass the information.

BindingFailedEventArgs

Provides event data for the DebugSettings.BindingFailed event.

BringIntoViewOptions

Represents the options that can be applied when an element is brought into view.

BringIntoViewRequestedEventArgs

Provides data for the UIElement.BringIntoViewRequested event.

BrushTransition

Provides the animated transition behavior when an element's brush changes. Currently limited to changes between SolidColorBrush objects.

ColorPaletteResources

Represents a specialized resource dictionary that contains color resources used by XAML elements.

CornerRadiusHelper

Provides basic utility methods for processing CornerRadius values. C# and Microsoft Visual Basic code should use methods of CornerRadius instead.

DataContextChangedEventArgs

Provides data for the DataContextChanged event.

DataTemplate

Describes the visual structure of a data object. Use data binding for specific elements in the template that display the data values.

DataTemplateKey

Represents the resource key for the DataTemplate class.

DebugSettings

Declares how certain aspects of the app behave when it is run in a debug environment

DependencyObject

Represents an object that participates in the dependency property system. DependencyObject is the immediate base class of many important UI-related classes, such as UIElement, Geometry, FrameworkTemplate, Style, and ResourceDictionary. For more info on how DependencyObject supports dependency properties, see Dependency properties overview.

DependencyObjectCollection

Implements a practical collection class that can contain DependencyObject items.

DependencyProperty

Represents a dependency property that is registered with the dependency property system. Dependency properties provide support for value expressions, data binding, animation, and property change notification. For more info on how DependencyProperty values serve as identifiers for dependency properties, see Dependency properties overview.

DependencyPropertyChangedEventArgs

Provides data for a PropertyChangedCallback implementation that is invoked when a dependency property changes its value. Also provides event data for the Control.IsEnabledChanged event and any other event that uses the DependencyPropertyChangedEventHandler delegate.

DispatcherTimer

Provides a timer that is integrated into the Dispatcher queue, which is processed at a specified interval of time and at a specified priority.

DragEventArgs

Provides data for drag-and-drop events.

DragOperationDeferral

Enables you to drag-and-drop content with a target app asynchronously.

DragStartingEventArgs

Provides event data for the DragStarting event.

DragUI

Provides the visual representation of the data being dragged at the start of a drag-and-drop operation.

DragUIOverride

Provides the visual representation of the data being dragged during a drag-and-drop operation, including feedback from the drop target.

DropCompletedEventArgs

Provides event data for the DropCompleted event.

DurationHelper

Provides basic utility methods for processing Duration values. C# and Microsoft Visual Basic code should use methods of Duration instead.

EffectiveViewportChangedEventArgs

Provides data for the FrameworkElement.EffectiveViewportChanged event.

ElementFactoryGetArgs

Represents the optional arguments to use when calling an implementation of the IElementFactory 's GetElement method.

ElementFactoryRecycleArgs

Represents the optional arguments to use when calling an implementation of the IElementFactory 's RecycleElement method.

ElementSoundPlayer

Represents a player for XAML control sounds.

EventTrigger

Represents a trigger that applies a set of actions (animation storyboards) in response to an event. Not commonly used. See Remarks.

ExceptionRoutedEventArgs

Provides event data for exceptions that are raised as events by asynchronous operations, such as ImageFailed.

FrameworkElement

Provides a base element class for Windows Runtime UI objects. FrameworkElement defines common API that support UI interaction and the automatic layout system. FrameworkElement  also defines API related to data binding, defining and examining the object tree, and tracking object lifetime.

FrameworkTemplate

Creates an element tree of elements. FrameworkTemplate is a base class for classes that have specific templating behavior, including ControlTemplate and DataTemplate.

FrameworkView

Represents the UI window of an application.

FrameworkViewSource

Creates views, specifically FrameworkView instances. This is infrastructure and does not need to be accessed in most app scenarios.

GridLengthHelper

Provides helper methods to evaluate or set GridLength values. C# and Microsoft Visual Basic code should use methods of GridLength instead.

MediaFailedRoutedEventArgs

Provides event data for media failed events.

PointHelper

Provides helper methods to set Point values. C# and Microsoft Visual Basic code should use methods of Point instead.

PropertyMetadata

Defines behavior aspects of a dependency property, including conditions it was registered with. For more info on how PropertyMetadata is used for dependency properties, see Custom dependency properties.

PropertyPath

Implements a data structure for describing a property as a path below another property, or below an owning type. Property paths are used in data binding to objects.

RectHelper

Provides helper methods to evaluate or set Rect values. C# and Microsoft Visual Basic code should use members of Rect instead.

ResourceDictionary

Defines a repository for XAML resources, such as styles, that your app uses. You define the resources in XAML and can then retrieve them in XAML using the {StaticResource} markup extension and {ThemeResource} markup extension s. You can also access resources with code, but that is less common.

RoutedEvent

Represents a routed event to the Windows Runtime event system.

RoutedEventArgs

Contains state information and event data associated with a routed event.

ScalarTransition

Provides the animated transition behavior when an element's Opacity or Rotation properties change.

Setter

Applies a value to a property in a Style or a VisualState.

SetterBase

Represents the base class for value setters.

SetterBaseCollection

Represents a collection of objects that inherit from SetterBase.

SizeChangedEventArgs

Provides data related to the FrameworkElement.SizeChanged event.

SizeHelper

Provides helper methods to evaluate or set Size values. C# and Microsoft Visual Basic code should use members of Size instead.

StateTrigger

Represents a trigger that applies visual states conditionally.

StateTriggerBase

Represents the base class for state triggers.

Style

Contains property setters that can be shared between instances of a type. A Style is usually declared in a resources collection so that it can be shared and used for applying control templates and other styles.

StyleTypedPropertyAttribute

Represents an attribute that is applied to the class definition and determines the TargetTypes of the properties that are of type Style.

TargetPropertyPath

Represents the path to a property on a target element.

TemplatePartAttribute

Represents an attribute that is applied to the class definition to identify the types of the named parts that are used for templating.

TemplateVisualStateAttribute

Specifies that a control can be in a certain state and that a VisualState is expected in the control's ControlTemplate.

ThicknessHelper

Provides helper methods to evaluate or set Thickness values. C# and Microsoft Visual Basic code should use members of Thickness instead.

TriggerAction

Serves as the base class for BeginStoryboard. Not commonly used. See Remarks.

TriggerActionCollection

Represents a collection of BeginStoryboard objects.

TriggerBase

Serves as the base class for EventTrigger. Not commonly used. See Remarks.

TriggerCollection

Represents a collection of EventTrigger objects.

UIElement

UIElement is a base class for most of the Windows Runtime UI objects that have visual appearance and can process basic input as part of your app's user interface.

UIElementWeakCollection

Represents a collection of weak references to UIElement objects.

UnhandledExceptionEventArgs

Provides data for the UnhandledException event.

Vector3Transition

Provides the animated transition behavior when an element's Translation or Scale properties change.

VisualState

Represents the visual appearance of a UI element when it is in a specific state. Visual states use Setters or a Storyboard to set UI properties within pages or control templates where the VisualState is defined.

VisualStateChangedEventArgs

Provides data for the CurrentStateChanging and CurrentStateChanged events.

VisualStateGroup

Contains mutually exclusive VisualState objects and VisualTransition objects that are used to go from one state to another.

VisualStateManager

Manages visual states and the logic for transitions between visual states for controls. Also provides the attached property support for VisualStateManager.VisualStateGroups, which is how you define visual states in XAML for a control template.

VisualTransition

Represents the visual behavior that occurs when the control transitions from one visual state to another.

Window

Represents an application window.

WindowCreatedEventArgs

Provides data for the OnWindowCreated method.

XamlRoot

Represents a tree of XAML content and information about the context in which it is hosted.

XamlRootChangedEventArgs

Provides data for the XamlRoot.Changed event.

Structs

CornerRadius

Describes the characteristics of a rounded corner, such as can be applied to a Border.

Duration

Represents the duration of time that a Timeline is active, or more generally represents a duration of time that also supports two special values Automatic and Forever.

GridLength

Represents a measurement for control logic that explicitly supports Star (*) sizing and Auto sizing.

Thickness

Describes the thickness of a frame around a rectangle. Four Double values describe the Left, Top, Right, and Bottom sides of the rectangle, respectively.

Interfaces

IDataTemplateExtension

Defines helper methods for phased rendering of a data template.

IElementFactory

Supports the creation and recycling of UIElement objects.

Enums

ApplicationHighContrastAdjustment

Defines constants that specify whether the framework automatically adjusts visual properties for the app when high contrast themes are enabled.

ApplicationRequiresPointerMode

Specifies the interaction experiences for non-pointer devices such as an Xbox controller or remote control.

ApplicationTheme

Declares the theme preference for an app.

AutomationTextAttributesEnum

Defines constants that identify text attributes of a Microsoft UI Automation text range.

DurationType

Declares whether a Duration has a special value of Automatic or Forever, or has valid information in its TimeSpan component.

ElementHighContrastAdjustment

Defines constants that specify whether the framework automatically adjusts visual properties for an element when high contrast themes are enabled.

ElementSoundKind

Defines constants that specify the sound played by the ElementSoundPlayer.Play method.

ElementSoundMode

Defines constants that specify a control's preference for whether sounds are played.

ElementSoundPlayerState

Defines constants that specify whether XAML controls play sounds.

ElementSpatialAudioMode

Defines constants that indicate whether spatial sound is on, off, or handled automatically.

ElementTheme

Specifies a UI theme that should be used for individual UIElement parts of an app UI.

FlowDirection

Defines constants that specify the content flow direction for text and UI elements.

FocusState

Describes how an element obtained focus.

FocusVisualKind

Specifies the visual feedback used to indicate the UI element with focus when navigating with a keyboard or gamepad.

FontCapitals

Describes the capital letter style value for the Typography.Capitals attached property.

FontEastAsianLanguage

Provides a mechanism for selecting font-specific versions of glyphs for a specified East Asian writing system or language.

FontEastAsianWidths

Provides a mechanism for selecting glyphs of different width styles.

FontFraction

Describes a fraction style value for the Typography.Fraction attached property.

FontNumeralAlignment

Describes the numeral alignment value for the Typography.NumeralAlignment attached property.

FontNumeralStyle

Describes a numeral style value for the Typography.NumeralStyle attached property.

FontVariants

Describes a font variant value for the Typography.Variants attached property.

GridUnitType

Describes the kind of value that a GridLength object is holding.

HorizontalAlignment

Indicates where an element should be displayed on the horizontal axis relative to the allocated layout slot of the parent element.

LineStackingStrategy

Describes the mechanism by which a line box is determined for each line.

OpticalMarginAlignment

Specifies how side bearing values in per-character typography are handled when aligning to a text container boundary.

TextAlignment

Specifies whether text is centered, left-aligned, or right-aligned.

TextLineBounds

Influences how a line box height is calculated

TextReadingOrder

Provides a value for TextReadingOrder properties.

TextTrimming

Describes how text is trimmed when it overflows the edge of its containing box.

TextWrapping

Specifies whether text wraps when it reaches the edge of its container.

Vector3TransitionComponents

Defines constants that specify which axes to animate during the Vector3Transition animation.

VerticalAlignment

Describes how a child element is vertically positioned or stretched within a parent's layout slot.

Visibility

Specifies the display state of an element.

Delegates

ApplicationInitializationCallback

Represents the callback that should be invoked during the initialization sequence.

BindingFailedEventHandler

Represents the method that will handle the DebugSettings.BindingFailed event.

CreateDefaultValueCallback

Represents the method that can be invoked as part of a PropertyMetadata constructor to defer definition of a dependency property default value.

DependencyPropertyChangedCallback

Represents the callback that is invoked when a property value changes, for property change notifications that are registered with the RegisterPropertyChangedCallback technique.

DependencyPropertyChangedEventHandler

Represents the method that will handle events that occur when a DependencyProperty is changed on a particular DependencyObject implementation.

DragEventHandler

Represents the method that will handle the DragEnter, DragLeave, DragOver, and Drop events of a UIElement.

EnteredBackgroundEventHandler

Represents the method that will handle the Application.EnteredBackground event.

ExceptionRoutedEventHandler

Represents the method that will handle certain events that report exceptions. These exceptions generally come from asynchronous operations.

LeavingBackgroundEventHandler

Represents the method that will handle the Application.LeavingBackground event.

PropertyChangedCallback

Represents the callback that is invoked when the effective property value of a dependency property changes.

RoutedEventHandler

Represents the method that will handle routed events.

SizeChangedEventHandler

Represents the method that will handle the SizeChanged event.

SuspendingEventHandler

Represents the method that will handle the Suspending event.

UnhandledExceptionEventHandler

Represents the method that will handle the UnhandledException event.

VisualStateChangedEventHandler

Represents the method that will handle the CurrentStateChanging and CurrentStateChanged events.

WindowActivatedEventHandler

Represents the method that will handle the Activated event.

WindowClosedEventHandler

Represents the method that will handle the Closed event.

WindowSizeChangedEventHandler

Represents the method that will handle the Window.SizeChanged event.

WindowVisibilityChangedEventHandler

Represents the method that will handle the VisibilityChanged event.

See also