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UploadDataCompletedEventHandler Delegate

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

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)
/** @delegate */
public delegate void UploadDataCompletedEventHandler (
	Object sender, 
	UploadDataCompletedEventArgs e
)
JScript supports the use of delegates, but not the declaration of new ones.

Parameters

sender

The source of the event.

e

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


The following method is called when the upload completes.

Public 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


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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