Occurs when an asynchronous data download operation completes.
Assembly: System (in System.dll)
This event is raised each time an asynchronous data download operation completes. Asynchronous data downloads are started by calling the DownloadDataAsync methods.
For more information about handling events, see Consuming Events.
The following code example demonstrates setting an event handler for this event.
' Sample call : DownLoadDataInBackground ("http:' www.contoso.com/GameScores.html") Public Shared Sub DownloadDataInBackground(ByVal address As String) Dim waiter As System.Threading.AutoResetEvent = New System.Threading.AutoResetEvent(False) Dim client As WebClient = New WebClient() ' Specify that the DownloadDataCallback method gets called ' when the download completes. AddHandler client.DownloadDataCompleted, AddressOf DownloadDataCallback Dim uri as Uri = New Uri(address) client.DownloadDataAsync(uri, waiter) ' Block the main application thread. Real applications ' can perform other tasks while waiting for the download to complete. waiter.WaitOne() End Sub
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2