public void AddItemToLabelSet(PinnableObject item) { if (item.LookupType == LookupType.Material) { var frm = new AddToLabelSet(User, item.ObjectID); frm.WindowStartupLocation = WindowStartupLocation.CenterOwner; if (frm.ShowDialog().ValueOrFalse()) { // Do it! Plugin.AddItemToLabelSet(item, frm.LabelSetName); } } else { ErrorMessage.Show("Unhandled item type for this operation: " + item.LookupType.ToString()); return; } }