WebClient.OnUploadValuesCompleted(UploadValuesCompletedEventArgs) 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
引發 UploadValuesCompleted 事件。
protected:
virtual void OnUploadValuesCompleted(System::Net::UploadValuesCompletedEventArgs ^ e);
protected virtual void OnUploadValuesCompleted (System.Net.UploadValuesCompletedEventArgs e);
abstract member OnUploadValuesCompleted : System.Net.UploadValuesCompletedEventArgs -> unit
override this.OnUploadValuesCompleted : System.Net.UploadValuesCompletedEventArgs -> unit
Protected Overridable Sub OnUploadValuesCompleted (e As UploadValuesCompletedEventArgs)
參數
範例
下列程式碼範例示範這個方法的實作,這個方法可由衍生自 WebClient 的類別自訂。
virtual void OnUploadValuesCompleted( UploadValuesCompletedEventArgs ^ e ) override
{
// Here you can perform any custom actions before the event is raised
// and event handlers are called...
WebClient::OnUploadValuesCompleted( e );
// Here you can perform any post event actions...
}
protected override void OnUploadValuesCompleted (UploadValuesCompletedEventArgs e)
{
// Here you can perform any custom actions before the event is raised
// and event handlers are called...
base.OnUploadValuesCompleted (e);
// Here you can perform any post event actions...
}
備註
繼承自這個類別的類別可以覆寫這個方法,以在事件發生時 UploadValuesCompleted 執行其他工作。
引發事件會透過委派叫用此事件處理常式。 如需詳細資訊,請參閱 處理和引發事件。
OnUploadValuesCompleted 方法也允許衍生類別處理事件,而不用附加委派。 這是在衍生類別中處理事件的慣用技巧。
給繼承者的注意事項
在衍生類別中覆 OnUploadValuesCompleted(UploadValuesCompletedEventArgs) 寫時,請務必呼叫基類的 OnUploadValuesCompleted(UploadValuesCompletedEventArgs) 方法,讓已註冊的委派接收事件。
適用於
意見反應
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