語言

ListBoxItem.Unselected 活動

定義

當 a ListBoxItem 未被選取時發生。

public:
 event System::Windows::RoutedEventHandler ^ Unselected;
public event System.Windows.RoutedEventHandler Unselected;
member this.Unselected : System.Windows.RoutedEventHandler 
Public Custom Event Unselected As RoutedEventHandler 

事件類型

範例

以下範例說明如何訂閱並處理此事件。

<ListBoxItem Name="lbi0" Selected="OnSelected" Unselected="OnUnselected">Item 0</ListBoxItem>
private void OnUnselected(object sender, RoutedEventArgs e)
{
    ListBoxItem lbi = e.Source as ListBoxItem;

    if (lbi != null)
    {
        label1.Content = lbi.Content.ToString() + " is unselected.";
    }
}
Private Sub OnUnselected(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Dim lbi As ListBoxItem = TryCast(e.Source, ListBoxItem)

    If lbi IsNot Nothing Then
        label1.Content = lbi.Content.ToString() & " is unselected."
    End If
End Sub

備註

要知道選擇何時ListBox改變,請聆聽事件。SelectionChanged

路由事件資訊

Item 價值觀
識別碼欄位 UnselectedEvent
路由策略 氣泡
代理人 RoutedEventHandler

適用於