public IEnumerable <Order> QueryByCertainTime(QueryFunc_T f) { var query = from o in orders where f(o.OrderTime) == true select o; return(query); }
public static IEnumerable <Order> QueryByCertainTime(QueryFunc_T f) { using (var db = new OrderContext()) { var query = from o in db.Orders where f(o.OrderTime) == true select o; return(query); } }