using (NorthwindEntities db = new NorthwindEntities()) {

var customers = db.CreateQuery<Customers>(
"SELECT VALUE c FROM NorthwindEntities.Customers AS c " +
"WHERE EXISTS( " +
"SELECT VALUE o " +
"FROM NAVIGATE(c, NorthwindModel.FK_Orders_Customers) " +
"AS o " +
"WHERE o.OrderDate > @Date)");
customers.Parameters.Add(new ObjectParameter("Date",
	DateTime.Now.AddYears(-10)));
customers.EnablePlanCaching = true;
foreach (var c in customers) {
	Console.WriteLine(c.Display());
}
}
