set general label style contents

setTextComponentContents

public void setTextComponentContents(ObjectIdCollection componentIds, string contentString, string componentName)
{
  Document acadDoc = Application.DocumentManager.MdiActiveDocument;
  CivilDocument civilDoc = CivilApplication.ActiveDocument;
  using (Transaction trans = acadDoc.Database.TransactionManager.StartOpenCloseTransaction())
  {
    foreach (ObjectId id in componentIds)
    {
      LabelStyleTextComponent textComponent = trans.GetObject(id, OpenMode.ForWrite) as LabelStyleTextComponent;
      textComponent.Name = componentName;
      textComponent.Text.Contents.Value = contentString;
    }
    trans.Commit();
  }
}