session

session的值可以是任何类型；

可以是字符串，也可以使对象，List等

 

List<AMS_registrations> list = new List<AMS_registrations>();

            if (Session["AMS_registrations"] == null)

            {

                Session["AMS_registrations"] = list;

            }

            else

            {

                list = Session["AMS_registrations"] as List<AMS_registrations>;

            }

            list.Add(registration);