AutomationProperty AutomationProperty AutomationProperty AutomationProperty Class

Definition

Bezeichnet eine Eigenschaft eines AutomationElement.Identifies a property of an AutomationElement.

public ref class AutomationProperty : System::Windows::Automation::AutomationIdentifier
public class AutomationProperty : System.Windows.Automation.AutomationIdentifier
type AutomationProperty = class
    inherit AutomationIdentifier
Public Class AutomationProperty
Inherits AutomationIdentifier
Vererbung
AutomationPropertyAutomationPropertyAutomationPropertyAutomationProperty

Beispiele

Im folgenden Beispiel wird ein Ereignishandler mit Eigenschaften Änderung hinzugefügt, und der- Property Handler überprüft den Member der Ereignis Argumente, um die geänderte Eigenschaft zu bestimmen.The following example adds a property-changed event handler, and the handler checks the Property member of the event arguments to determine the property that has been changed.


AutomationPropertyChangedEventHandler propChangeHandler;
/// <summary>
/// Adds a handler for property-changed event; in particular, a change in the enabled state.
/// </summary>
/// <param name="element">The UI Automation element whose state is being monitored.</param>
public void SubscribePropertyChange(AutomationElement element)
{
    Automation.AddAutomationPropertyChangedEventHandler(element, 
        TreeScope.Element, 
        propChangeHandler = new AutomationPropertyChangedEventHandler(OnPropertyChange),
        AutomationElement.IsEnabledProperty);

}

/// <summary>
/// Handler for property changes.
/// </summary>
/// <param name="src">The source whose properties changed.</param>
/// <param name="e">Event arguments.</param>
private void OnPropertyChange(object src, AutomationPropertyChangedEventArgs e)
{
    AutomationElement sourceElement = src as AutomationElement;
    if (e.Property == AutomationElement.IsEnabledProperty)
    {
        bool enabled = (bool)e.NewValue;
        // TODO: Do something with the new value. 
        // The element that raised the event can be identified by its runtime ID property.
    }
    else
    { 
        // TODO: Handle other property-changed events.
    }
}

public void UnsubscribePropertyChange(AutomationElement element)
{
    if (propChangeHandler != null)
    {
        Automation.RemoveAutomationPropertyChangedEventHandler(element, propChangeHandler);
    }
}

Dim propChangeHandler As AutomationPropertyChangedEventHandler

''' <summary>
''' Adds a handler for property-changed event; in particular, a change in the enabled state.
''' </summary>
''' <param name="element">The UI Automation element whose state is being monitored.</param>
Public Sub SubscribePropertyChange(ByVal element As AutomationElement)
    propChangeHandler = _
        New AutomationPropertyChangedEventHandler(AddressOf OnPropertyChange)
    Automation.AddAutomationPropertyChangedEventHandler(element, TreeScope.Element, _
        propChangeHandler, AutomationElement.IsEnabledProperty)

End Sub



''' <summary>
''' Handler for property changes.
''' </summary>
''' <param name="src">The source whose properties changed.</param>
''' <param name="e">Event arguments.</param>
Private Sub OnPropertyChange(ByVal src As Object, ByVal e As AutomationPropertyChangedEventArgs) 
    Dim sourceElement As AutomationElement = DirectCast(src, AutomationElement)
    If e.Property Is AutomationElement.IsEnabledProperty Then
        Dim enabled As Boolean = CBool(e.NewValue)
        ' TODO: Do something with the new value. 
        ' The element that raised the event can be identified by its runtime ID property.
    Else
    End If
 ' TODO: Handle other property-changed events.
End Sub


Public Sub UnsubscribePropertyChange(ByVal element As AutomationElement)
    If (propChangeHandler IsNot Nothing) Then
        Automation.RemoveAutomationPropertyChangedEventHandler(element, propChangeHandler)
    End If

End Sub

Hinweise

Diese Klasse identifiziert Eigenschaften, nicht die Werte von Eigenschaften.This class identifies properties, not the values of properties. Statische Objekte dieses Typs werden als Felder von AutomationElement und Steuerelement Muster Klassen gefunden.Static objects of this type are found as fields of AutomationElement and control pattern classes.

Methoden

CompareTo(Object) CompareTo(Object) CompareTo(Object) CompareTo(Object)

Vergleicht diesen AutomationIdentifier mit einem anderen AutomationIdentifier.Compares this AutomationIdentifier with another AutomationIdentifier.

(Inherited from AutomationIdentifier)
Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Gibt einen Wert zurück, der angibt, ob der angegebene AutomationIdentifier diesem AutomationIdentifier entspricht.Returns a value indicating whether the supplied AutomationIdentifier is equivalent to this AutomationIdentifier.

(Inherited from AutomationIdentifier)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Gibt den Hashcode für diesen BenutzeroberflächenautomatisierungUI Automation-Bezeichner zurück.Returns the hash code for this BenutzeroberflächenautomatisierungUI Automation identifier.

(Inherited from AutomationIdentifier)
GetType() GetType() GetType() GetType()

Ruft den Type der aktuellen Instanz ab.Gets the Type of the current instance.

(Inherited from Object)
LookupById(Int32) LookupById(Int32) LookupById(Int32) LookupById(Int32)

Ruft ein AutomationProperty ab, das einen angegebenen numerischen Bezeichner kapselt.Retrieves an AutomationProperty that encapsulates a specified numerical identifier.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Erstellt eine flache Kopie des aktuellen Object.Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Gibt eine Zeichenfolge zurück, die das aktuelle Objekt darstellt.Returns a string that represents the current object.

(Inherited from Object)

Eigenschaften

Id Id Id Id

Ruft den zugrunde liegenden numerischen Bezeichner ab.Gets the underlying numerical identifier.

(Inherited from AutomationIdentifier)
ProgrammaticName ProgrammaticName ProgrammaticName ProgrammaticName

Ruft den registrierten programmgesteuerten Namen ab.Gets the registered programmatic name.

(Inherited from AutomationIdentifier)

Gilt für:

Siehe auch