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ASP.NET 中的 asp.net 实现购物车详细代码


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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[