Selector.SelectionChanged Event


Occurs when the selection of a Selector changes.

public event System.Windows.Controls.SelectionChangedEventHandler SelectionChanged;


The following example shows how to attach the SelectionChanged event to a list box control.

<TextBox Name="tb" Width="140" Height="30"></TextBox>
<ListBox Name="lb" Width="100" Height="55" SelectionChanged="PrintText" SelectionMode="Single">
  <ListBoxItem>Item 1</ListBoxItem>
  <ListBoxItem>Item 2</ListBoxItem>
  <ListBoxItem>Item 3</ListBoxItem>
  <ListBoxItem>Item 4</ListBoxItem>
  <ListBoxItem>Item 5</ListBoxItem>
  <ListBoxItem>Item 6</ListBoxItem>
  <ListBoxItem>Item 7</ListBoxItem>
  <ListBoxItem>Item 8</ListBoxItem>
  <ListBoxItem>Item 9</ListBoxItem>
  <ListBoxItem>Item 10</ListBoxItem>

The following example shows how to handle the SelectionChanged event.

void PrintText(object sender, SelectionChangedEventArgs args)
    ListBoxItem lbi = ((sender as ListBox).SelectedItem as ListBoxItem);
    tb.Text = "   You selected " + lbi.Content.ToString() + ".";
Private Sub PrintText(ByVal sender As Object, ByVal e As SelectionChangedEventArgs)

    Dim lbsender As ListBox
    Dim li As ListBoxItem

    lbsender = CType(sender, ListBox)
    li = CType(lbsender.SelectedItem, ListBoxItem)
    tb.Text = "   You selected " & li.Content.ToString & "."
End Sub


This event occurs whenever there is a change to a selection. A selection can be changed not only by user interaction but also by binding as well as other set values.

Routed Event Information

Identifier field SelectionChangedEvent
Routing strategy Bubbling
Delegate SelectionChangedEventHandler

Applies to