Just a quick question as I am working through K. McNeish's book.

Near the top of page 267 it says "..add a reference to the following namespaces to the top of the code file."

using System.Data;
using HW.NetBook.Samples.Business

Did the book mean in the OrdersBusiness.cs file? That file already has

using System.Data ;
namespace HW.NetBook.Samples.Business

at the top of the code (see page 266).

Simple question, but it is better to clear on these things than to stumble along.

Thanks,

Kevin