DownloadDataCompleted Event

WebClient.DownloadDataCompleted Event


Occurs when an asynchronous data download operation completes.

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

public event DownloadDataCompletedEventHandler DownloadDataCompleted

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 ("");
public static void DownloadDataInBackground (string address)
    System.Threading.AutoResetEvent waiter = new System.Threading.AutoResetEvent (false);
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);

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

    // Block the main application thread. Real applications
    // can perform other tasks while waiting for the download to complete.
    waiter.WaitOne ();

.NET Framework
Available since 2.0
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