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ExpandCollapsePattern.ExpandCollapseStateProperty Field

Identifies the ExpandCollapseState property.

Namespace:  System.Windows.Automation
Assembly:  UIAutomationClient (in UIAutomationClient.dll)

Public Shared ReadOnly ExpandCollapseStateProperty As AutomationProperty

This identifier is used by UI Automation client applications. UI Automation providers should use the equivalent field in ExpandCollapsePatternIdentifiers.

ExpandCollapseState refers to the visibility of immediate child objects only; it does not refer to the visibility of all descendant objects.

The default value is Expanded.

In the following example, a root element is passed to a function that returns a collection of UI Automation elements that are descendants of the root and satisfy a set of property conditions.

''' <summary> 
''' Finds all automation elements that satisfy  
''' the specified condition(s). 
''' </summary> 
''' <param name="targetApp"> 
''' The automation element from which to start searching. 
''' </param> 
''' <returns> 
''' A collection of automation elements satisfying  
''' the specified condition(s). 
''' </returns> 
Private Function FindAutomationElement( _
ByVal targetApp As AutomationElement) As AutomationElementCollection
    If targetApp Is Nothing Then 
        Throw New ArgumentException("Root element cannot be null.")
    End If 

    Dim conditionLeafNode As New PropertyCondition( _
    ExpandCollapsePattern.ExpandCollapseStateProperty, _

    Return targetApp.FindAll(TreeScope.Descendants, conditionLeafNode)

End Function 'FindAutomationElement    

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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