WebClient.DownloadDataCompleted Event

Note: This event is new in the .NET Framework version 2.0.

Occurs when an asynchronous data download operation completes.

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

'Declaration
Public Event DownloadDataCompleted As DownloadDataCompletedEventHandler
'Usage
Dim instance As WebClient
Dim handler As DownloadDataCompletedEventHandler

AddHandler instance.DownloadDataCompleted, handler

/** @event */
public void add_DownloadDataCompleted (DownloadDataCompletedEventHandler value)

/** @event */
public void remove_DownloadDataCompleted (DownloadDataCompletedEventHandler value)

JScript supports the use of events, but not the declaration of new ones.

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 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 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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