asp.net的session对象购物车

我刚学asp.net，要做购物车，不用数据库的那种，只是session对象，现在代码写好了，就是我第二次点击购买的时候，我希望购物车里有两次记录要怎么做，就比如同一件商品，我点击两次购买，购物车里有两个订单
代码如下：
<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

protected void Button1_Click(object sender, EventArgs e) { Session["a"] = Label1.Text; Session["g"] = Label7.Text +1 +""; Response.Redirect("~/Default2.aspx"); } protected void Button2_Click(object sender, EventArgs e) { Session["b"] = Label2.Text; Session["h"] = Label8.Text +""; Response.Redirect("~/Default2.aspx"); } protected void Button3_Click(object sender, EventArgs e) { Session["c"] = Label3.Text; Session["i"] = Label9.Text +""; Response.Redirect("~/Default2.aspx"); } protected void Button4_Click(object sender, EventArgs e) { Session["d"] = Label4.Text; Session["j"] = Label10.Text +""; Response.Redirect("~/Default2.aspx"); } protected void Button5_Click(object sender, EventArgs e) { Session["e"] = Label5.Text; Session["k"] = Label11.Text +""; Response.Redirect("~/Default2.aspx"); } protected void Button6_Click(object sender, EventArgs e) { Session["f"] = Label6.Text; Session["l"] = Label12.Text +""; Response.Redirect("~/Default2.aspx"); }

.style1 { text-align: left; } .style2 { text-align: center; font-weight: 700; } .style3 { font-weight: 700; text-align: center; } .style4 { font-weight: 700; text-align: center; } .style5 { font-weight: 700; text-align: center; } .style6 { font-weight: 700; text-align: center; } .style7 { font-weight: 700; text-align: center; } .style8 { height: 21px; } .style9 {} #form1 { text-align: left; }

</div>
<asp:Image ID="Image2" runat="server" Height="234px" 
    ImageUrl="~/图片/时代广场的蟋蟀.jpg" Width="234px" />

ImageUrl="~/图片/查理和巧克力工厂.jpg" Width="234px" />

ImageUrl="~/图片/了不起的狐狸爸爸.jpg" Width="234px" />

Width="243px">/asp:Label

Width="234px">/asp:Label

Width="234px">/asp:Label

CssClass="style8" UseSubmitBehavior="False" />
  /asp:Label

UseSubmitBehavior="False" />
/asp:Label


/asp:Label

ImageUrl="~/图片/爱德华的奇妙之旅.jpg" Width="234px" />

ImageUrl="~/图片/小时候就想做的事.jpg" Width="234px" />

ImageUrl="~/图片/天蓝色的彼岸.jpg" Width="234px" />

Width="234px">/asp:Label

Width="234px">/asp:Label

Width="234px">/asp:Label



  /asp:Label

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

<asp:Button ID="Button5" runat="server" Text="购买" onclick="Button5_Click" />

/asp:Label


/asp:Label



PostBackUrl="~/Default2.aspx">去购物车/asp:LinkButton

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

protected void Page_Load(object sender, EventArgs e) { Session["Buy"] = Convert.ToInt32(Session["Buy"]); Response.Write(Session["a"]); Response.Write(Session["g"]); Response.Write(Session["b"]); Response.Write(Session["h"]); Response.Write(Session["c"]); Response.Write(Session["i"]); Response.Write(Session["d"]); Response.Write(Session["j"]); Response.Write(Session["e"]); Response.Write(Session["k"]); Response.Write(Session["f"]); Response.Write(Session["l"]); }

.style1 { height: 111px; } #form1 { height: 65px; width: 932px; }

</div>
<br />
<br />
<asp:LinkButton ID="LinkButton1" runat="server">去收银台</asp:LinkButton>

继续购物/asp:LinkButton

要怎么做呢？

你可以点击购买这个按钮以后创建一个
HashTable shopping = new HashTable();
点击购买后往shopping.add("商品ID",商品对象);
每次点击都往这个shopping对象中添加一条记录 ,添加完以后把Session["Shop"] = shopping ;展示就直接把Sessiong["Shop"]对象中的Table强转一下就好了 !