Oracle Data Access

How do I concatonate the data from the same field from multiple rows

I need to concatonate data from the same field with multiplre rows witha one to many relationship. As and example: oder_id     product 503          corn  503          beans 503         apples the end result wanted would be ...

TableAdapterManager contains no connection information. Set each TableAdapterManager TableAdapter property to a valid TableAdapter instance.

I am very new to oracle. I was able to install it and was trying the tutorial: Building .NET Applications Using Oracle Developer Tools for Visual Studio. I am using Windows XP sp3 and Visual Studio 2008 Professional. I was working on the tutorial that came with the Oracle Data Access Components...

What am I doing wrong. Please Help

An unhandled exception of type 'Oracle.DataAccess.Client.OracleException' occurred in oracle.dataaccess.dll Additional information: System error. Imports System.Data Imports Oracle.DataAccess.Client Public Class Form1 Inherits System.Windows.Forms.Form Dim objConnection As...