TreeView.SelectedItemChanged TreeView.SelectedItemChanged TreeView.SelectedItemChanged TreeView.SelectedItemChanged Event

Definition

Tritt ein, wenn sich die SelectedItem ändert.Occurs when the SelectedItem changes.

public:
 event System::Windows::RoutedPropertyChangedEventHandler<System::Object ^> ^ SelectedItemChanged;
public event System.Windows.RoutedPropertyChangedEventHandler<object> SelectedItemChanged;
member this.SelectedItemChanged : System.Windows.RoutedPropertyChangedEventHandler<obj> 
Public Custom Event SelectedItemChanged As RoutedPropertyChangedEventHandler(Of Object) 

Beispiele

Das folgende Beispiel zeigt, wie einen Ereignishandler für die SelectedItemChanged Ereignis.The following example shows how to specify an event handler for the SelectedItemChanged event.

<TreeView SelectedItemChanged="SelectionChanged">
  <TreeViewItem Header="Employee1" IsSelected="True">
    <TreeViewItem Header="Jesper"/>
    <TreeViewItem Header="Aaberg"/>
    <TreeViewItem Header="12345"/>
  </TreeViewItem>
  <TreeViewItem Header="Employee2">
    <TreeViewItem Header="Dominik"/>
    <TreeViewItem Header="Paiha"/>
    <TreeViewItem Header="98765"/>
  </TreeViewItem>
</TreeView>

Das folgende Beispiel zeigt, wie Sie den Ereignishandler zu definieren.The following example shows how to define the event handler.

private void SelectionChanged(object sender, RoutedPropertyChangedEventArgs<Object> e)
{
    //Perform actions when SelectedItem changes
    MessageBox.Show(((TreeViewItem) e.NewValue).Header.ToString());
}
Private Sub SelectionChanged(ByVal sender As Object, ByVal e As RoutedPropertyChangedEventArgs(Of Object))
	'Perform actions when SelectedItem changes
	MessageBox.Show((CType(e.NewValue, TreeViewItem)).Header.ToString())
End Sub

Hinweise

Informationen zum RoutingereignisRouted Event Information

Feld "ID"Identifier Field SelectedItemChangedEvent
Routing-StrategieRouting Strategy BubblingBubbling
delegateDelegate RoutedPropertyChangedEventHandler<T>

Verwendung von XAML-AttributenXAML Attribute Usage

<object SelectedItemChanged="RoutedPropertyChangedEventHandler"/>  

Gilt für: