Control.OnBindingContextChanged(EventArgs) Control.OnBindingContextChanged(EventArgs) Control.OnBindingContextChanged(EventArgs) Control.OnBindingContextChanged(EventArgs) Method

定義

引發 BindingContextChanged 事件。Raises the BindingContextChanged event.

protected:
 virtual void OnBindingContextChanged(EventArgs ^ e);
protected virtual void OnBindingContextChanged (EventArgs e);
abstract member OnBindingContextChanged : EventArgs -> unit
override this.OnBindingContextChanged : EventArgs -> unit
Protected Overridable Sub OnBindingContextChanged (e As EventArgs)

參數

e
EventArgs EventArgs EventArgs EventArgs

包含事件資料的 EventArgsAn EventArgs that contains the event data.

備註

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.

OnBindingContextChanged 方法也允許衍生類別處理事件,而不用附加委派。The OnBindingContextChanged 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

當在衍生類別中覆寫 OnBindingContextChanged(EventArgs) 時,請確定呼叫基底類別的 OnBindingContextChanged(EventArgs) 方法,使已註冊的委派能接收到事件。When overriding OnBindingContextChanged(EventArgs) in a derived class, be sure to call the base class's OnBindingContextChanged(EventArgs) method so that registered delegates receive the event.

適用於

另請參閱