WebClient.OnDownloadDataCompleted(DownloadDataCompletedEventArgs) Method

Definition

Raises the DownloadDataCompleted event.

protected:
 virtual void OnDownloadDataCompleted(System::Net::DownloadDataCompletedEventArgs ^ e);
protected virtual void OnDownloadDataCompleted (System.Net.DownloadDataCompletedEventArgs e);
abstract member OnDownloadDataCompleted : System.Net.DownloadDataCompletedEventArgs -> unit
override this.OnDownloadDataCompleted : System.Net.DownloadDataCompletedEventArgs -> unit
Protected Overridable Sub OnDownloadDataCompleted (e As DownloadDataCompletedEventArgs)

Parameters

e
DownloadDataCompletedEventArgs

A DownloadDataCompletedEventArgs object that contains event data.

Examples

The following code example shows an implementation of this method that can be customized by a class derived from WebClient.

virtual void OnDownloadDataCompleted( DownloadDataCompletedEventArgs ^ e ) override
{
   // Here you can perform any custom actions before the event is raised
   // and event handlers are called...
   WebClient::OnDownloadDataCompleted( e );

   // Here you can perform any post event actions...
}
protected override void OnDownloadDataCompleted (DownloadDataCompletedEventArgs e)
{
    // Here you can perform any custom actions before the event is raised
    // and event handlers are called...

    base.OnDownloadDataCompleted(e);

    // Here you can perform any post event actions...
}

Remarks

Classes that inherit from this class can override this method to perform additional tasks when the DownloadDataCompleted event occurs.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events

The OnDownloadDataCompleted method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

When overriding OnDownloadDataCompleted(DownloadDataCompletedEventArgs) in a derived class, be sure to call the base class' OnDownloadDataCompleted(DownloadDataCompletedEventArgs) method so that registered delegates receive the event.

Applies to