WebClient.OnDownloadProgressChanged(DownloadProgressChangedEventArgs) WebClient.OnDownloadProgressChanged(DownloadProgressChangedEventArgs) WebClient.OnDownloadProgressChanged(DownloadProgressChangedEventArgs) WebClient.OnDownloadProgressChanged(DownloadProgressChangedEventArgs) Method

Definition

Raises the DownloadProgressChanged event.

protected:
 virtual void OnDownloadProgressChanged(System::Net::DownloadProgressChangedEventArgs ^ e);
protected virtual void OnDownloadProgressChanged (System.Net.DownloadProgressChangedEventArgs e);
abstract member OnDownloadProgressChanged : System.Net.DownloadProgressChangedEventArgs -> unit
override this.OnDownloadProgressChanged : System.Net.DownloadProgressChangedEventArgs -> unit
Protected Overridable Sub OnDownloadProgressChanged (e As DownloadProgressChangedEventArgs)

Parameters

Examples

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

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

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

Remarks

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 Handling and Raising Events.

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(DownloadProgressChangedEventArgs) in a derived class, be sure to call the base class' OnDownloadProgressChanged(DownloadProgressChangedEventArgs) method so that registered delegates receive the event.

Applies to