This event is raised each time an asynchronous operation to open a stream that is used to send data to a resource completes. These operations are started by calling the erload:System.Net.WebClient.OpenWriteAsync methods.
The System.Net.OpenWriteCompletedEventHandler is the delegate for this event. The System.Net.OpenWriteCompletedEventArgs class provides the event handler with event data.
For more information about handling events, see Consuming Events.