WebClient::DownloadDataCompleted Event


Occurs when an asynchronous data download operation completes.

Namespace:   System.Net
Assembly:  System (in System.dll)

event DownloadDataCompletedEventHandler^ DownloadDataCompleted {
	void add(DownloadDataCompletedEventHandler^ value);
	void remove(DownloadDataCompletedEventHandler^ value);

This event is raised each time an asynchronous data download operation completes. Asynchronous data downloads are started by calling the DownloadDataAsync methods.

The DownloadDataCompletedEventHandler is the delegate for this event. The DownloadDataCompletedEventArgs class provides the event handler with event data.

For more information about handling events, see NIB: Consuming Events.

The following code example demonstrates setting an event handler for this event.

// Sample call : DownLoadDataInBackground ("http://www.contoso.com/GameScores.html");
void DownloadDataInBackground( String^ address )
   System::Threading::AutoResetEvent^ waiter = gcnew System::Threading::AutoResetEvent( false );
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);

   // Specify that the DownloadDataCallback method gets called
   // when the download completes.
   client->DownloadDataCompleted += gcnew DownloadDataCompletedEventHandler( DownloadDataCallback );
   client->DownloadDataAsync( uri, waiter );

   // Block the main application thread. Real applications
   // can perform other tasks while waiting for the download to complete.

.NET Framework
Available since 2.0
Return to top