private void Content_CollectionReset(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs <IRun> e)
 {
     DeregisterRunEvents(e.OldItems);
     RegisterRunEvents(e.Items);
 }
 private void Content_ItemsAdded(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs <IRun> e)
 {
     RegisterRunEvents(e.Items);
 }
 private void Content_ItemsRemoved(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs <IRun> e)
 {
     DeregisterRunEvents(e.Items);
     UpdateData();
 }