internal void OnDistinctValuesRequested(object sender, DistinctValuesRequestedEventArgs e)
 {
     if (this.DistinctValuesRequested != null)
     {
         this.DistinctValuesRequested(this, e);
     }
 }
 private void OnDistinctValuesRequested(object sender, DistinctValuesRequestedEventArgs args)
 {
     this.DeliverEvent(sender, args);
 }