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WebClient.OnDownloadProgressChanged Method

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

Raises the DownloadProgressChanged event.

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

protected:
virtual void OnDownloadProgressChanged (
	DownloadProgressChangedEventArgs^ e
)
protected void OnDownloadProgressChanged (
	DownloadProgressChangedEventArgs e
)
protected function OnDownloadProgressChanged (
	e : DownloadProgressChangedEventArgs
)

Parameters

e

A DownloadProgressChangedEventArgs object containing event data.

Classes that inherit from this class can override this method to perform additional tasks when the DownloadProgressChanged event occurs.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The OnDownloadProgressChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors When overriding OnDownloadProgressChanged in a derived class, be sure to call the base class’s OnDownloadProgressChanged method so that registered delegates receive the event.

The following code example shows an implementation of this method that can be customized by a class derived from WebClient.

protected override void OnDownloadProgressChanged (DownloadProgressChangedEventArgs e)
{
    // Here you can perform any custom actions before the event is raised
    // and event handlers are called...

    base.OnDownloadProgressChanged (e);

    // Here you can perform any post event actions...
}

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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