购物车 ASP.NET 中的会话状态 ArrayList

发布于 2024-08-30 19:58:13 字数 721 浏览 4 评论 0原文

我正在创建一个购物车应用程序，但在为数组列表实现会话状态时遇到一些问题。

在我的页面加载中，我声明

 if (Session["Cart"] == null)
        {
            Session["Cart"] = new ArrayList();
        }

        else
        { 
            ArrayList cart = (ArrayList)Session["Cart"];
        }

如果会话尚不存在则创建会话。然后我有一个用于将项目添加到数组列表的按钮的事件处理程序，

protected void onClick_AddBooking(object sender, EventArgs e)
    {
        int ClassID = Convert.ToInt32(Request.QueryString.Get("Class_Id"));
        ArrayList cart1 = new ArrayList();

        cart1 = Session["Cart"];       

        cart1.Add(ClassID);

我猜我只是不知道如何处理会话状态，因此造成混乱。我本质上是存储 class_ID，然后当学生确认时，我会将其存储到数据库并将该 ID 与班级详细信息相关联。

预先感谢各位！

原文

I'm creating a shopping cart application and I'm having some issues with implementing a session state for my arraylist.

in my page load i declared

 if (Session["Cart"] == null)
        {
            Session["Cart"] = new ArrayList();
        }

        else
        { 
            ArrayList cart = (ArrayList)Session["Cart"];
        }

to create the session if it doesn't exist yet.
then i have an event handler for a button to add items to the arraylist

protected void onClick_AddBooking(object sender, EventArgs e)
    {
        int ClassID = Convert.ToInt32(Request.QueryString.Get("Class_Id"));
        ArrayList cart1 = new ArrayList();

        cart1 = Session["Cart"];       

        cart1.Add(ClassID);

i'm guessing i just don't know how to handle session states yet, thus the confusion.
I'm essentially storing the class_ID then when the student confirms i'll store that to the DB and associate that ID with the Class Details.

Thanks in advance guys!

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甚是思念 2024-09-06 19:58:13

您遇到什么问题了吗？尝试以下操作：

protected void onClick_AddBooking(object sender, EventArgs e)
    {
        int ClassID = Convert.ToInt32(Request.QueryString.Get("Class_Id"));
        ArrayList cart1 = new ArrayList();

        cart1 = (ArrayList)Session["Cart"];       

        cart1.Add(ClassID);

        Session["Cart"] = cart1;

Is there a problem you are having? Try the following:

protected void onClick_AddBooking(object sender, EventArgs e)
    {
        int ClassID = Convert.ToInt32(Request.QueryString.Get("Class_Id"));
        ArrayList cart1 = new ArrayList();

        cart1 = (ArrayList)Session["Cart"];       

        cart1.Add(ClassID);

        Session["Cart"] = cart1;

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