Thanks (slaps forehead repeatedly). Blame it on rapid typing and an empty stomach.

So in this case, it's not necessary to instantiate the object with a new()...

Once more, with feeling...


1) the class

using System;
using System.Data;

public class MyLocalData
{
	private static DataTable _DtCustomers;
	public static DataTable DtCustomers
	{
		get {return _DtCustomers ;}
		set {_DtCustomers = value;}
	}

       // if you need to utilize a binding manager, or other data, you could add it here
}

2) first form

MyLocalData.DtCustomers = oBusinessLayer.RetrieveCustomers();
DataRow Dr = MyLocalData.DtCustomers.NewRow();
Dr["FirstName"] = "JOHN";
MyLocalData.DtCustomers.Rows.Add(Dr);

3) second form

dataGrid1.DataSource = MyLocalData.DtCustomers;