public ActionResult Stamp()
{
control = (TrackOrderControl)Session["TrackOrderControl"]; // get the control object from the Session Object.
ViewData["OrderState"] = control.StampOrder_1(); // 作法一：使用 Switch-Case 處理訂單狀態
//ViewData["OrderState"] = control.StampOrder_2(); // 作法二：使用 State Pattern 處理訂單狀態
return View("Index");
}
// GET: State
public ActionResult Index()
{
if (Session["TrackOrderControl"] == null)
{
control = new TrackOrderControl(); // new a domain control instance.
Session["TrackOrderControl"] = control;
}
else
Session["TrackOrderControl"] = control; // hold the control object as stateful.
return View();
}
