Selector.SelectionChanged (Evento)

public event SelectionChangedEventHandler SelectionChanged

/** @event */
public void add_SelectionChanged (SelectionChangedEventHandler value)

/** @event */
public void remove_SelectionChanged (SelectionChangedEventHandler value)

En JScript, se pueden controlar los eventos que define una clase, pero no se pueden definir unos propios.

<object SelectionChanged="SelectionChangedEventHandler" .../>

<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>
</ListBox>

void PrintText(object sender, SelectionChangedEventArgs args)
{
  ListBoxItem lbi = ((sender as ListBox).SelectedItem as ListBoxItem);
  tb.Text = "   You selected " + lbi.Content.ToString() + ".";
}