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ExpandCollapsePattern.Pattern Field

Identifies the ExpandCollapsePattern control pattern.

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

public static readonly AutomationPattern Pattern
public static final AutomationPattern Pattern
public static final var Pattern : AutomationPattern
Not applicable.

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 ExpandCollapsePattern GetExpandCollapsePattern(
    AutomationElement targetControl)
{
    ExpandCollapsePattern expandCollapsePattern = null;

    try
    {
        expandCollapsePattern =
            targetControl.GetCurrentPattern(
            ExpandCollapsePattern.Pattern)
            as ExpandCollapsePattern;
    }
    // Object doesn't support the ExpandCollapsePattern control pattern.
    catch (InvalidOperationException)
    {
        return null;
    }

    return expandCollapsePattern;
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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