ToolStripComboBox.OnUnsubscribeControlEvents(Control) 方法

定義

從指定的控制項取消訂閱事件。Unsubscribes events from the specified control.

protected:
 override void OnUnsubscribeControlEvents(System::Windows::Forms::Control ^ control);
protected override void OnUnsubscribeControlEvents (System.Windows.Forms.Control control);
override this.OnUnsubscribeControlEvents : System.Windows.Forms.Control -> unit

參數

control
Control

要取消訂閱事件的來源控制項。The control from which to unsubscribe events.

備註

覆寫 OnSubscribeControlEvents 方法,將 OnSubscribeControlEvents中訂閱的事件取消訂閱。Override the OnSubscribeControlEvents method to unsubscribe events subscribed in OnSubscribeControlEvents.

引發事件會透過委派叫用此事件處理常式。Raising an event invokes the event handler through a delegate. 如需詳細資訊,請參閱處理和引發事件For more information, see Handling and Raising Events.

OnUnsubscribeControlEvents 方法也允許衍生類別處理事件,而不用附加委派。The OnUnsubscribeControlEvents method also allows derived classes to handle the event without attaching a delegate. 這是在衍生類別中處理事件的慣用技巧。This is the preferred technique for handling the event in a derived class.

給繼承者的注意事項

覆寫衍生類別中的 OnUnsubscribeControlEvents(Control) 時,請務必呼叫基類的 OnUnsubscribeControlEvents(Control) 方法,讓已註冊的委派能接收事件。When overriding OnUnsubscribeControlEvents(Control) in a derived class, be sure to call the base class’s OnUnsubscribeControlEvents(Control) method so that registered delegates receive the event.

適用於