protected ListItem[] GetHoursTypesListItems(BaseLocationHoursDataSet pData)
{
  return (
            from l in pData.LocationHours   // putting cursor over the l here shows:  (range variable) TSource l
            select new ListItem
            {
              Value = l,  //ignore the fact that I didn't specify a property - that's the problem, that none of the properties of the object show up.
              Text = l
            }
          ).ToArray<ListItem>();
}

select new ListItem
{
   Value = l.Field,
   Text = l.Field2
}

var query = pData.Tables["Name"].AsEnumerable()

DataSet ds = new DataSet();
FillOrders(ds);

DataTable orders = ds.Tables["SalesOrderHeader"];

var ordersQuery = orders.ToQueryable();

var query = from o in ordersQuery
where o.Field<bool>("OnlineOrderFlag") == true
select new { SalesOrderID = o.Field<int>("SalesOrderID"),
OrderDate = o.Field<DateTime>("OrderDate") };

pData.LocationHours.Select(l=>new ... )

IEnumerable<TResult> Select<TSource, TResult>(
  this IEnumerable<TSource> source, Func<TSource, TResult> projection)