Ah, got it! Thanks!

Now its telling me that there is no column called "line"?

DataColumn col1 = new DataColumn("line");
items.Columns.Add(col1);


DataRow dr;
dr = ba.items.NewRow();

dr.BeginEdit();
dr["line"] = ba.items.Rows.Count + 1;
dr.EndEdit();

ba.items.Rows.Add(dr);
gridControl1.DataSource = ba.items;