ExpandCollapsePattern.ExpandCollapseStateProperty Field

Definition

Identifies the ExpandCollapseState property.

public static readonly System.Windows.Automation.AutomationProperty ExpandCollapseStateProperty;

Field Value

Examples

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);
}

Remarks

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.

Applies to

Product Versions
.NET Framework 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

See also