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<%@ Page language="c#" Codebehind="shoppingcart.aspx.cs" AutoEventWireup="false" Inherits="myshop.shoppingcart" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>shoppingcart</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<LINK href="mycss.css" type="text/css" rel="stylesheet">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<center>
<form id="Form1" runat="server">
<table width="500" border="0" cellspacing="0" cellpadding="0">
<tr>
<td>
<ASP:DataGrid id="ShoppingCartDlt" runat="server" Width="500" BackColor="white" BorderColor="black"
ShowFooter="false" CellPadding="3" CellSpacing="0" Font-Name="Verdana" Font-Size="8pt" HeaderStyle-BackColor="#cecfd6"
AutoGenerateColumns="false" MaintainState="true">
<Columns>
<asp:TemplateColumn HeaderText="删除">
<ItemTemplate>
<center>
<asp:CheckBox id="chkProductID" runat="server" />
</center>
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="ProdID" HeaderText="ID" />
<asp:BoundColumn DataField="ProName" HeaderText="商品名称" />
<asp:BoundColumn DataField="UnitPrice" HeaderText="单价" />
<asp:TemplateColumn HeaderText="数量">
<ItemTemplate>
<asp:TextBox id="CountTb" runat="server" Text=''''<%#DataBinder.Eval(Container.DataItem,"ProdCount")%>''''>
</asp:TextBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="TotalPrice" HeaderText="小计(元)" />
</Columns>
</ASP:DataGrid></td>
</tr>
</table>
<br>
<table width="500" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><asp:Button id="update" runat="server" Text="更新我的购物车" CssClass="button2" /></td>
<td><asp:Button id="CheckOut" runat="server" Text="结算" CssClass="button5" /> <input type="button" name="close2" value="继续购物" onClick="window.close();return false;"
class="button2"></td>
<td align="right"><br>
<asp:Label id="label" runat="server" Width="100px" Visible="True" ForeColor="#FF8080" Height="18px"></asp:Label></td>
</tr>
</table>
</form>
</center>
</body>
</HTML>
=======================================================================================
以上为HTML页面部分
==========================================================================================
using System;
using System.Collections;
using System.ComponentModel;
using System.Web.SessionState;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.OleDb;
using System.Configuration;
namespace myshop
{
/// <summary>
/// shoppingcart 的摘要说明。
/// </summary>
public class shoppingcart : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataGrid ShoppingCartDlt;
protected System.Web.UI.WebControls.Button update;
protected System.Web.UI.WebControls.Button CheckOut;
protected System.Web.UI.HtmlControls.HtmlForm Form1;
protected System.Web.UI.WebControls.Label label;
protected System.Web.UI.WebControls.CheckBox chkProductID;
protected System.Web.UI.WebControls.TextBox txtCount;
protected System.Web.UI.WebControls.TextBox CountTb;
string AddProID;
private void Page_Load(object sender, System.EventArgs e)
{
try
{
if (Session["logon"]!="yes"||Session["username"]==null)
{
Response.Redirect("error.htm") ;
}
}
catch
{
Response.Redirect("error.htm") ;
} /////////////查看用户是否已经登陆。
if(!IsPostBack)
{
if(Request.Params["mode"]=="view") //检测是否为直接查看购物车。
{
ViewShoppingCart();
Caculator();
}
if(Request.Params["productID"]!=null||Request.Params["productID"]!="")
{
AddProID=Request["productID"];
UpdateShoppingCart();
Caculator();
}
}// 在此处放置用户代码以初始化页面
}
public void CreateCartTable() //创建购物车
{
DataSet ds = new DataSet();
DataTable newDT=new DataTable("CartTable");
ds.Tables.Add(newDT);
DataColumn newDC;
newDC=new DataColumn("ProdID",System.Type.GetType("System.Int32"));
ds.Tables["CartTable"].Columns.Add(newDC);
newDC=new DataColumn("ProdCount",System.Type.GetType("System.Int32"));
newDC.DefaultValue=1;
ds.Tables["CartTable"].Columns.Add(newDC);
newDC=new DataColumn("ProName",System.Type.GetType("System.String"));
ds.Tables["CartTable"].Columns.Add(newDC);
newDC=new DataColumn("UnitPrice",System.Type.GetType("System.Double"));
ds.Tables["CartTable"].Columns.Add(newDC);
newDC=new DataColumn("TotalPrice",System.Type.GetType("System.Double"));
ds.Tables["CartTable"].Columns.Add(newDC);
newDC=new DataColumn("IsDeleted",System.Type.GetType("System.Int32"));
newDC.DefaultValue=0; // public void WriteShoppingCart() 中 newDR[5]="0"; 行，已被注销，
ds.Tables["CartTable"].Columns.Add(newDC);
Session["myCartTable"]=newDT;
ShoppingCartDlt.DataSource=ds.Tables["CartTable"].DefaultView;
ShoppingCartDlt.DataBind();
}
public void UpdateShoppingCart()
{
if(Session["myCartTable"]==null)//Session["myCartTable"]==null
{
CreateCartTable(); //调用函数CreateCartTable()新建一个DataTable
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