ExpandCollapsePattern.ExpandCollapseStateProperty 欄位

定義

命名空間:

System.Windows.Automation

組件:

UIAutomationClient.dll

識別 ExpandCollapseState 屬性。

public: static initonly System::Windows::Automation::AutomationProperty ^ ExpandCollapseStateProperty;

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

 staticval mutable ExpandCollapseStateProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly ExpandCollapseStateProperty As AutomationProperty 

欄位值

AutomationProperty

範例

在下列範例中，根元素會傳遞至函式，此函式會傳回根系的UI自動化元素集合，並滿足一組屬性條件。

///--------------------------------------------------------------------
/// <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);
}

'''--------------------------------------------------------------------
''' <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, _
    ExpandCollapseState.LeafNode)

    Return targetApp.FindAll(TreeScope.Descendants, conditionLeafNode)

End Function 'FindAutomationElement

備註

使用者介面自動化用戶端應用程式會使用此標識碼。 使用者介面自動化提供者應該使用 中的 ExpandCollapsePatternIdentifiers對等欄位。

ExpandCollapseState 是指僅限直屬子物件的可見度，而非所有子系物件的可見度。

預設值是 Expanded。

另請參閱

• InvokePattern 和 ExpandCollapsePattern 功能表項目範例