TreeView.SelectedItemChanged Event

Reference

Definition

Namespace:: System.Windows.Controls

Assembly:: PresentationFramework.dll

Important

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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)

Event Type

RoutedPropertyChangedEventHandler<Object>

Examples

The following example shows how to specify an event handler for the SelectedItemChanged event.

XAML

<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>

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

Remarks

Routed Event Information

Item	Value
Identifier Field	SelectedItemChangedEvent
Routing Strategy	Bubbling
Delegate	RoutedPropertyChangedEventHandler<T>

XAML Attribute Usage

<object SelectedItemChanged="RoutedPropertyChangedEventHandler"/>

Applies to

Produkt	Verzie
.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, 10

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