ContextMenu.Opened 事件

定义

命名空间:

System.Windows.Controls

程序集:

PresentationFramework.dll

在上下文菜单的特定实例打开时发生。

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

public event System.Windows.RoutedEventHandler Opened;

member this.Opened : System.Windows.RoutedEventHandler 

Public Custom Event Opened As RoutedEventHandler 

事件类型

RoutedEventHandler

示例

以下示例演示如何使用 ContextMenu 事件： Opened 和 Closed。

<ContextMenu Name="cm" Opened="OnOpened" Closed="OnClosed" StaysOpen="true">

void OnOpened(object sender, RoutedEventArgs e)
{
    cmButton.Content = "The ContextMenu Opened";
}
void OnClosed(object sender, RoutedEventArgs e)
{
    cmButton.Content = "The ContextMenu Closed";
}

Private Sub OnOpened(ByVal sender As Object, ByVal args As RoutedEventArgs)
    cmButton.Content = "The ContextMenu Opened"
End Sub

Private Sub OnClosed(ByVal sender As Object, ByVal args As RoutedEventArgs)
    cmButton.Content = "The ContextMenu Closed"
End Sub

注解

路由事件信息

标识符字段	OpenedEvent
路由策略	鼓 泡
委托	RoutedEventHandler

另请参阅

• ContextMenuService