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ExpandCollapsePattern.Pattern Field

Identifies the ExpandCollapsePattern control pattern.

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

'Declaration
Public Shared ReadOnly Pattern As AutomationPattern
'Usage
Dim value As AutomationPattern 

value = ExpandCollapsePattern.Pattern

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

The pattern identifier (ID) is passed to methods such as GetCurrentPattern to retrieve the control pattern of interest from the specified AutomationElement.

In the following example, a ExpandCollapsePattern control pattern is obtained from a UI Automation element.

'''-------------------------------------------------------------------- 
''' <summary> 
''' Obtains an ExpandCollapsePattern control pattern from an  
''' automation element. 
''' </summary> 
''' <param name="targetControl"> 
''' The automation element of interest. 
''' </param> 
''' <returns> 
''' A ExpandCollapsePattern object. 
''' </returns> 
'''-------------------------------------------------------------------- 
Private Function GetExpandCollapsePattern( _
ByVal targetControl As AutomationElement) As ExpandCollapsePattern
    Dim expandCollapsePattern As ExpandCollapsePattern = Nothing 

    Try
        expandCollapsePattern = DirectCast( _
        targetControl.GetCurrentPattern(expandCollapsePattern.Pattern), _
        ExpandCollapsePattern)
    Catch exc As InvalidOperationException
        ' Object doesn't support the ExpandCollapsePattern control pattern. 
        Return Nothing 
    End Try 

    Return expandCollapsePattern

End Function 'GetExpandCollapsePattern    

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0
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