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UploadDataCompletedEventHandler Delegate

Represents the method that will handle the UploadDataCompleted event of a WebClient.

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

'Declaration
Public Delegate Sub UploadDataCompletedEventHandler ( _
	sender As Object, _
	e As UploadDataCompletedEventArgs _
)
'Usage
Dim instance As New UploadDataCompletedEventHandler(AddressOf HandlerMethod)

Parameters

sender
Type: System.Object

The source of the event.

e
Type: System.Net.UploadDataCompletedEventArgs

A UploadDataCompletedEventArgs containing event data.

When you create a UploadDataCompletedEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see Events and Delegates.

The following code example demonstrates asynchronously uploading data.

		Public Shared Sub UploadDataInBackground2(ByVal address As String)

			Dim client As WebClient = New WebClient()
			Dim text As String = "Time = 12:00am temperature = 50" 
			Dim data() As Byte = System.Text.Encoding.UTF8.GetBytes(text)
			Dim method As String = "POST" 

			AddHandler client.UploadDataCompleted, AddressOf UploadDataCallback2
			Dim uri as Uri = New Uri(address)
                        client.UploadDataAsync(uri, method, data)
		End Sub
void UploadDataInBackground2 (String* address)
{
    WebClient* client = new WebClient ();
    String* text = S"Time = 12:00am temperature = 50";
    Byte data[] = System::Text::Encoding::UTF8->GetBytes (text);
    String* method = S"POST";

    client->UploadDataCompleted += new UploadDataCompletedEventHandler (UploadDataCallback2);
    client->UploadDataAsync (address, method, data);
}

The following method is called when the upload completes.

Private Shared Sub UploadDataCallback2(ByVal sender As Object, ByVal e As UploadDataCompletedEventArgs)

    Dim data() As Byte = CType(e.Result, Byte())
    Dim reply As String = System.Text.Encoding.UTF8.GetString(data)

    Console.WriteLine(reply)
End Sub
void UploadDataCallback2 (Object* /*sender*/, UploadDataCompletedEventArgs* e)
{
    Byte data[] = dynamic_cast<Byte[]>(e->Result);
    String* reply = System::Text::Encoding::UTF8->GetString (data);

    Console::WriteLine (reply);
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

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