MenuItem.SubmenuOpened 事件

定義

命名空間:

System.Windows.Controls

組件:

PresentationFramework.dll

發生於 IsSubmenuOpen 屬性的狀態變更為 true 時。

public:
 event System::Windows::RoutedEventHandler ^ SubmenuOpened;

public event System.Windows.RoutedEventHandler SubmenuOpened;

member this.SubmenuOpened : System.Windows.RoutedEventHandler 

Public Custom Event SubmenuOpened As RoutedEventHandler 

事件類型

RoutedEventHandler

範例

下列範例示範如何呼叫和處理 SubmenuOpened 事件。

<MenuItem Name="submenu" Header="Menu with Submenu" 
          SubmenuOpened="OnSubmenuOpened"
          SubmenuClosed="OnSubmenuClosed">

private void OnSubmenuOpened(object sender, RoutedEventArgs e)
{

    if (sender == e.Source)
    {
        textBlock1.Text = "Submenu is open.";
    }
}

Private Sub OnSubmenuOpened(ByVal sender As Object, ByVal e As RoutedEventArgs)

    If sender Is e.Source Then
        textBlock1.Text = "Submenu is open."
    End If
End Sub

備註

路由事件資訊

識別碼欄位	SubmenuOpenedEvent
路由策略	鼓 泡
代理人	RoutedEventHandler