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UI Automation Support for the Table Control Type

Note Note

This documentation is intended for .NET Framework developers who want to use the managed UI Automation classes defined in the System.Windows.Automation namespace. For the latest information about UI Automation, see Windows Automation API: UI Automation.

This topic provides information about UI Automation support for the Table control type. In UI Automation, a control type is a set of conditions that a control must meet in order to use the ControlTypeProperty property. The conditions include specific guidelines for UI Automation tree structure, UI Automation property values and control patterns.

Table controls contain rows and columns of text, and optionally, row headers and column headers.

The following sections define the required UI Automation tree structure, properties, control patterns, and events for the Table control type. The UI Automation requirements apply to all table controls, whether Windows Presentation Foundation (WPF), Win32, or Windows Forms.

This topic contains the following sections.

The following table depicts the control view and the content view of the UI Automation tree that pertains to table controls and describes what can be contained in each view. For more information on the UI Automation tree, see UI Automation Tree Overview.

Control View

Content View

Table

  • Header (0 or 1)

  • Text (0 or 1)

  • Various controls (0 or more)

Table

  • Text (0 or more)

  • Various controls (0 or more)

If a table control has row or column headers, they must be exposed in the Control View of the UI Automation tree. The Content View does not need to expose this information because it can be accessed using the TablePattern.

The following table lists the UI Automation properties whose value or definition is especially relevant to Table controls. For more information about UI Automation properties, see UI Automation Properties for Clients.

UI Automation Property

Value

Notes

AutomationIdProperty

See notes.

The value of this property needs to be unique across all controls in an application.

BoundingRectangleProperty

See notes.

The outermost rectangle that contains the whole control.

ClickablePointProperty

See notes.

Supported if there is a bounding rectangle. If not every point within the bounding rectangle is clickable, and you perform specialized hit testing, then override and provide a clickable point.

IsKeyboardFocusableProperty

See notes.

If the control can receive keyboard focus, it must support this property.

NameProperty

See notes.

The table control typically gets its name from a static text label. If there is no static text label, you must assign a Name property that must always be available to explain the purpose of the table.

LabeledByProperty

See notes.

If there is a static text label, this property should expose a reference to the automation element of the control.

ControlTypeProperty

Table

This value is the same for all UI frameworks.

LocalizedControlTypeProperty

"table"

Localized string corresponding to the Table control type.

HelpTextProperty

See notes.

More details about the purpose of the table should be exposed through this property if it is not sufficiently explained by accessing the NameProperty.

DescribedByProperty

See notes.

If the table is annotated by other UI element (for example, a text element that holds the description for the table), the DescribedBy property should expose a reference to the automation element of the text control.

IsContentElementProperty

True

The table control must always be content.

IsControlElementProperty

True

The table control must always be a control.

The following table lists the UI Automation control patterns required to be supported by Table controls. For more information on control patterns, see UI Automation Control Patterns Overview.

Control Pattern

Support

Notes

IGridProvider

Yes

The table control always supports this control pattern because the items that it contains have data that is presented in a grid.

IGridItemProvider

Yes (required with child objects)

The inner objects of a table should support both the GridItem and TableItem control patterns. The table itself need not support the GridItem or TableItem control patterns unless the table is part of another table.

ITableProvider

Yes

The table control always has the capability of having headers associated with the content.

ITableItemProvider

Yes (required with child objects)

The inner objects of a table should support both the GridItem and TableItem control patterns. The table itself need not support the GridItem or TableItem control patterns unless the table is part of another table.

The following table lists the UI Automation events required to be supported by all table controls. For more information on events, see UI Automation Events Overview.

UI Automation Event

Support

Notes

BoundingRectangleProperty property-changed event.

Required

None

IsOffscreenProperty property-changed event.

Required

None

IsEnabledProperty property-changed event.

Required

None

AutomationFocusChangedEvent

Required

None

StructureChangedEvent

Required

None

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