protected virtual void OnRaiseRetryEvent(RetryEventArgs e)
        {
            // Make a temporary copy of the event to avoid possibility of
            // a race condition if the last subscriber unsubscribes
            // immediately after the null check and before the event is raised.
            EventHandler<RetryEventArgs> handler = RaiseRetryEvent;

            // Event will be null if there are no subscribers.
            if (handler != null)
            {
                // Use the () operator to raise the event.
                handler(this, e);
            }
        }
 /// <summary>
 /// Handles retry events.
 /// </summary>
 /// <param name="sender">The object that triggered the event.</param>
 /// <param name="e">Event data.</param>
 void HandleRetryEvent(object sender, RetryEventArgs e)
 {
     Console.WriteLine(String.Format("Retry {0}: {1}", e.CurrentRetryCount, e.LastException));
 }
 /// <summary>
 /// Handles retry events.
 /// </summary>
 /// <param name="sender">The object that triggered the event.</param>
 /// <param name="e">Event data.</param>
 void HandleRetryEvent(object sender, RetryEventArgs e)
 {
     Console.WriteLine(String.Format("Retry {0}: {1}", e.CurrentRetryCount, e.LastException));
 }