如何初始化一个局部变量

            query = (from c in myreturn.ReturnModels.Shipments
                         where c.ShippedDate == model.StartTime && c.DeliveryDate                    == model.EndTime
                         select c).ToList();

                                                    怎么初始化这个query？

List<表的model类> query = new List<表的model类>();