Artículo
11/17/2011

DataGridGroupItemAutomationPeer Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Exposes the groups of items in CollectionViewGroup views of a DataGrid to UI automation.

Inheritance Hierarchy

System.Object
  System.Windows.DependencyObject
    System.Windows.Automation.Peers.AutomationPeer
      System.Windows.Automation.Peers.FrameworkElementAutomationPeer
        System.Windows.Automation.Peers.DataGridGroupItemAutomationPeer

Namespace: System.Windows.Automation.Peers
Assembly: System.Windows.Controls.Data (in System.Windows.Controls.Data.dll)

Syntax

'Declaration
Public Class DataGridGroupItemAutomationPeer _
    Inherits FrameworkElementAutomationPeer _
    Implements IExpandCollapseProvider, IGridProvider, IScrollItemProvider, ISelectionProvider

public class DataGridGroupItemAutomationPeer : FrameworkElementAutomationPeer, 
    IExpandCollapseProvider, IGridProvider, IScrollItemProvider, ISelectionProvider

The DataGridGroupItemAutomationPeer type exposes the following members.

Constructors

	Name	Description
	DataGridGroupItemAutomationPeer	Initializes a new instance of the DataGridGroupItemAutomationPeer class.

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Properties

	Name	Description
	Dispatcher	Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
	EventsSource	Gets or sets an AutomationPeer that is reported to the automation client as a source for all the events that come from this AutomationPeer. (Inherited from AutomationPeer.)
	Owner	Gets the UIElement that is associated with this FrameworkElementAutomationPeer. (Inherited from FrameworkElementAutomationPeer.)

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Methods

	Name	Description
	CheckAccess	Determines whether the calling thread has access to this object. (Inherited from DependencyObject.)
	ClearValue	Clears the local value of a dependency property. (Inherited from DependencyObject.)
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetAcceleratorKey	Gets the accelerator key combination for the object that is associated with the UI Automation peer. (Inherited from AutomationPeer.)
	GetAcceleratorKeyCore	Retrieves the accelerator key combinations for the item group. (Overrides FrameworkElementAutomationPeer.GetAcceleratorKeyCore().)
	GetAccessKey	Gets the access key for the object that is associated with the automation peer. (Inherited from AutomationPeer.)
	GetAccessKeyCore	Retrieves the access key for the item group. (Overrides FrameworkElementAutomationPeer.GetAccessKeyCore().)
	GetAnimationBaseValue	Returns any base value established for a Silverlight dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.)
	GetAutomationControlType	Gets the control type for the object that is associated with the UI Automation peer. (Inherited from AutomationPeer.)
	GetAutomationControlTypeCore	Retrieves the AutomationControlType for the item group associated with this DataGridGroupItemAutomationPeer. Called by GetAutomationControlType. (Overrides FrameworkElementAutomationPeer.GetAutomationControlTypeCore().)
	GetAutomationId	Gets the AutomationId of the object that is associated with the automation peer. (Inherited from AutomationPeer.)
	GetAutomationIdCore	Retrieves the string that uniquely identifies the group of items to UI automation. (Overrides FrameworkElementAutomationPeer.GetAutomationIdCore().)
	GetBoundingRectangle	Gets the Rect object that represents the screen coordinates of the element that is associated with the automation peer. (Inherited from AutomationPeer.)
	GetBoundingRectangleCore	Retrieves the object that represents the bounding box in screen coordinates of the group of items. (Overrides FrameworkElementAutomationPeer.GetBoundingRectangleCore().)
	GetChildren	Gets the collection of child elements that are represented in the UI Automation tree as immediate child elements of the automation peer. (Inherited from AutomationPeer.)
	GetChildrenCore	Retrieves automation peers for the collection of child elements that are represented in the UI automation tree as immediate child elements of the automation peer. (Overrides FrameworkElementAutomationPeer.GetChildrenCore().)
	GetClassName	Gets the name of the control class that is associated with the peer. (Inherited from AutomationPeer.)
	GetClassNameCore	Gets the name of the class that is associated with this DataGridGroupItemAutomationPeer. Called by GetClassName. (Overrides FrameworkElementAutomationPeer.GetClassNameCore().)
	GetClickablePoint	Gets a Point on the object that is associated with the automation peer that responds to a mouse click. (Inherited from AutomationPeer.)
	GetClickablePointCore	Retrieves the point on the group of items that responds to a mouse click. (Overrides FrameworkElementAutomationPeer.GetClickablePointCore().)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetHelpText	Gets text that describes the functionality of the control that is associated with the automation peer. (Inherited from AutomationPeer.)
	GetHelpTextCore	Retrieves text that describes the functionality of the group of items. (Overrides FrameworkElementAutomationPeer.GetHelpTextCore().)
	GetItemStatus	Gets text that conveys the visual status of the object that is associated with this automation peer. (Inherited from AutomationPeer.)
	GetItemStatusCore	Retrieves text that conveys the visual status of the group of items. (Overrides FrameworkElementAutomationPeer.GetItemStatusCore().)
	GetItemType	Gets a string that describes what kind of item an element represents. (Inherited from AutomationPeer.)
	GetItemTypeCore	Retrieves a value that describes what kind of item the group of items represents. (Overrides FrameworkElementAutomationPeer.GetItemTypeCore().)
	GetLabeledBy	Gets the AutomationPeer for the UIElement that is targeted to the element. (Inherited from AutomationPeer.)
	GetLabeledByCore	Retrieves the automation peer for the element designated as the label for the group of items. (Overrides FrameworkElementAutomationPeer.GetLabeledByCore().)
	GetLocalizedControlType	Gets a localized string that represents the control type, for the control that is associated with this automation peer. The localized string parallels a AutomationControlType value. (Inherited from AutomationPeer.)
	GetLocalizedControlTypeCore	Retrieves a localized string that represents the AutomationControlType for the group of items. (Overrides FrameworkElementAutomationPeer.GetLocalizedControlTypeCore().)
	GetName	Gets the value that the automation peer reports as the UI Automation Name for the associated control. (Inherited from AutomationPeer.)
	GetNameCore	Gets the UI Automation Name of the data grid item that is associated with this DataGridGroupItemAutomationPeer. Called by GetName. (Overrides FrameworkElementAutomationPeer.GetNameCore().)
	GetOrientation	Gets a value that indicates the explicit control orientation, if any. (Inherited from AutomationPeer.)
	GetOrientationCore	Retrieves a value that indicates the explicit control orientation, if any. (Overrides FrameworkElementAutomationPeer.GetOrientationCore().)
	GetParent	Gets the AutomationPeer that is the parent of this AutomationPeer. (Inherited from AutomationPeer.)
	GetPattern	Gets an object that supports the requested pattern, based on the patterns supported by this DataGridGroupItemAutomationPeer. (Overrides FrameworkElementAutomationPeer.GetPattern(PatternInterface).)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	GetValue	Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.)
	HasKeyboardFocus	Gets a value that indicates whether the object that is associated with this automation peer currently has keyboard focus. (Inherited from AutomationPeer.)
	HasKeyboardFocusCore	Retrieves a value that indicates whether the group of items currently has keyboard focus. (Overrides FrameworkElementAutomationPeer.HasKeyboardFocusCore().)
	InvalidatePeer	Triggers recalculation of the main properties of the AutomationPeer and raises the PropertyChanged notification to the automation client if the properties have changed. (Inherited from AutomationPeer.)
	IsContentElement	Gets a value that indicates whether the object that is associated with this automation peer contains data that is presented to the user. (Inherited from AutomationPeer.)
	IsContentElementCore	Retrieves a value that indicates whether the group of items contains data that is presented to the user. (Overrides FrameworkElementAutomationPeer.IsContentElementCore().)
	IsControlElement	Gets a value that indicates whether the element is understood by the user as interactive or as contributing to the logical structure of the control in the GUI. (Inherited from AutomationPeer.)
	IsControlElementCore	Retrieves a value that indicates whether the group of items is understood by the user as interactive, or as contributing to the logical structure of the UI. (Overrides FrameworkElementAutomationPeer.IsControlElementCore().)
	IsEnabled	Gets a value that indicates whether the element associated with this automation peer supports interaction. (Inherited from AutomationPeer.)
	IsEnabledCore	Retrieves a value that indicates whether the group of items supports interaction. (Overrides FrameworkElementAutomationPeer.IsEnabledCore().)
	IsKeyboardFocusable	Gets a value that indicates whether the element can accept keyboard focus. (Inherited from AutomationPeer.)
	IsKeyboardFocusableCore	Retrieves a value that indicates whether the group of items can accept keyboard focus. (Overrides FrameworkElementAutomationPeer.IsKeyboardFocusableCore().)
	IsOffscreen	Gets a value that indicates whether an element is off the screen. (Inherited from AutomationPeer.)
	IsOffscreenCore	Retrieves a value that indicates whether the data grid item is off the screen. (Overrides FrameworkElementAutomationPeer.IsOffscreenCore().)
	IsPassword	Gets a value that indicates whether the element contains sensitive content. (Inherited from AutomationPeer.)
	IsPasswordCore	Retrieves a value that indicates whether the group of items contains sensitive content. (Overrides FrameworkElementAutomationPeer.IsPasswordCore().)
	IsRequiredForForm	Gets a value that indicates whether the object that is associated with this peer must be completed on a form. (Inherited from AutomationPeer.)
	IsRequiredForFormCore	Retrieves a value that indicates whether the group of items must be completed on a form. (Overrides FrameworkElementAutomationPeer.IsRequiredForFormCore().)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	PeerFromProvider	Gets an AutomationPeer for the specified IRawElementProviderSimple proxy. (Inherited from AutomationPeer.)
	ProviderFromPeer	Gets the IRawElementProviderSimple proxy for the specified AutomationPeer. (Inherited from AutomationPeer.)
	RaiseAutomationEvent	Raises an automation event. (Inherited from AutomationPeer.)
	RaisePropertyChangedEvent	Raises an event to notify the automation client of a changed property value. (Inherited from AutomationPeer.)
	ReadLocalValue	Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.)
	SetFocus	Sets the keyboard focus on the object that is associated with this automation peer. (Inherited from AutomationPeer.)
	SetFocusCore	Sets the keyboard focus on the data grid item. (Overrides FrameworkElementAutomationPeer.SetFocusCore().)
	SetValue	Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Explicit Interface Implementations

	Name	Description
	IExpandCollapseProvider.Collapse	Infrastructure. For a description of this member, see IExpandCollapseProvider.Collapse.
	IExpandCollapseProvider.Expand	Infrastructure. For a description of this member, see IExpandCollapseProvider.Expand.
	IExpandCollapseProvider.ExpandCollapseState	Infrastructure. For a description of this member, see IExpandCollapseProvider.ExpandCollapseState.
	IGridProvider.ColumnCount	Infrastructure. For a description of this member, see IGridProvider.ColumnCount.
	IGridProvider.GetItem	Infrastructure. For a description of this member, see IGridProvider.GetItem.
	IGridProvider.RowCount	Infrastructure. For a description of this member, see IGridProvider.RowCount.
	IScrollItemProvider.ScrollIntoView	Infrastructure. For a description of this member, see IScrollItemProvider.ScrollIntoView.
	ISelectionProvider.CanSelectMultiple	Infrastructure. For a description of this member, see ISelectionProvider.CanSelectMultiple.
	ISelectionProvider.GetSelection	Infrastructure. For a description of this member, see ISelectionProvider.GetSelection.
	ISelectionProvider.IsSelectionRequired	Infrastructure. For a description of this member, see ISelectionProvider.IsSelectionRequired.

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Remarks

Automation Patterns

This automation peer implements the following pattern interfaces: IExpandCollapseProvider, IGridProvider, IScrollItemProvider, ISelectionProvider.

Notes to Inheritors

The FrameworkElementAutomationPeer overrides in DataGridGroupItemAutomationPeer follow a pattern of returning results based on a row header group owner if one exists, and otherwise returning defaults such as String.Empty or null.

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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