SelectionPattern.IsSelectionRequiredProperty Feld

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

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

 staticval mutable IsSelectionRequiredProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly IsSelectionRequiredProperty As AutomationProperty 

Feldwert

Beispiele

Im folgenden Beispiel wird ein Stammelement an eine Funktion übergeben, die eine Auflistung von Benutzeroberflächenautomatisierung Elementen zurückgibt, die Nachfolger des Stamms sind und eine Reihe von Eigenschaftenbedingungen erfüllen.

///--------------------------------------------------------------------
/// <summary>
/// Finds all automation elements that satisfy 
/// the specified condition(s).
/// </summary>
/// <param name="rootElement">
/// 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 rootElement)
{
    if (rootElement == null)
    {
        throw new ArgumentException("Root element cannot be null.");
    }

    PropertyCondition conditionCanSelectMultiple =
        new PropertyCondition(
        SelectionPattern.CanSelectMultipleProperty, true);

    PropertyCondition conditionIsSelectionRequired =
        new PropertyCondition(
        SelectionPattern.IsSelectionRequiredProperty, false);

    // Use any combination of the preceding condtions to 
    // find the control(s) of interest
    Condition condition = new AndCondition(
        conditionCanSelectMultiple,
        conditionIsSelectionRequired);

    return rootElement.FindAll(TreeScope.Descendants, condition);
}

'''--------------------------------------------------------------------
''' <summary>
''' Finds all automation elements that satisfy 
''' the specified condition(s).
''' </summary>
''' <param name="rootElement">
''' 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 rootElement As AutomationElement) As AutomationElementCollection
    If rootElement Is Nothing Then
        Throw New ArgumentException("Root element cannot be null.")
    End If

    Dim conditionCanSelectMultiple As New PropertyCondition( _
    SelectionPattern.CanSelectMultipleProperty, True)

    Dim conditionIsSelectionRequired As New PropertyCondition( _
    SelectionPattern.IsSelectionRequiredProperty, False)

    ' Use any combination of the preceding condtions to 
    ' find the control(s) of interest
    Dim condition As New AndCondition( _
    conditionCanSelectMultiple, conditionIsSelectionRequired)

    Return rootElement.FindAll(TreeScope.Descendants, condition)
End Function 'FindAutomationElement

Hinweise

Dieser Bezeichner wird von Benutzeroberflächenautomatisierung Clientanwendungen verwendet. Benutzeroberflächenautomatisierung Anbieter sollten das entsprechende Feld in SelectionPatternIdentifiersverwenden.

Gilt für: