/// <summary>
 /// Gets a holding for a user.  Transforms data from DataContract to model UI class for HTML display.
 /// </summary>
 /// <param name="userID">User id to retrieve data for.</param>
 /// <param name="holdingID">Holding id to retrieve data for.</param>
 public HoldingDataModel getHolding(string userID, int holdingID)
 {
     dalCustomer = Trade.DALFactory.Customer.Create(Settings.DAL);
     dalCustomer.Open(Settings.TRADEDB_SQL_CONN_STRING);;
     try
     {
         return dalCustomer.getHolding(userID, holdingID);
     }
     catch
     {
         throw;
     }
     finally
     {
         dalCustomer.Close();
     }
 }