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ExpandCollapsePattern.ExpandCollapseStateProperty Field

Identifies the ExpandCollapseState property.

Namespace:  System.Windows.Automation
Assembly:  UIAutomationClient (in UIAutomationClient.dll)
public static readonly AutomationProperty ExpandCollapseStateProperty

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 AutomationElementCollection FindAutomationElement(
    AutomationElement targetApp)
{
    if (targetApp == null)
    {
        throw new ArgumentException("Root element cannot be null.");
    }

    PropertyCondition conditionLeafNode =
        new PropertyCondition(
        ExpandCollapsePattern.ExpandCollapseStateProperty, 
        ExpandCollapseState.LeafNode);

    return targetApp.FindAll(
        TreeScope.Descendants, conditionLeafNode);
}

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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