asp.net 购物车实现详细代码

作者：字体：[增加减小] 来源：互联网时间：2017-05-11

通过本文主要向大家介绍了购物车代码 asp.net,购物网站asp.net,购物车 asp.net,下载asp.net源代码,源代码 asp.net等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com

<%@ 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 WriteShoppingCart( );
}
else
{
//如果购物蓝中已有商品,则需要对购物信息表DataTable进行更新,并将其棒定到ShoppingCartDlt WriteShoppingCart( );
}
}
public void ViewShoppingCart( ) //查看购物车
{
if( Session["myCartTable"]!=null )
{
DataTable viewTable=new DataTable( "nowCartTable" );
viewTable=( DataTable )Session["myCartTable"];
ShoppingCartDlt.DataSource = viewTable.DefaultView;
//购物车棒定到ShoppingCartDlt ShoppingCartDlt.DataBind( );
}
}
public void WriteShoppingCart( )
{
if( Request.Params["mode"]!="view" ) //检查是否是直接查看购物车,如果直接查看,就不再写MYCARTTABLE
{
DataTable nowTable=new DataTable( "nowCartTable" );
nowTable=( DataTable )Session["myCartTable"];
int pn=nowTable.Rows.Count;
int i=0;
bool hasone=false;
int nowProdID;
while( i<pn && !hasone )
{
nowProdID=Int32.Parse( nowTable.Rows[i][0].ToString( ) );
if( nowProdID==Int32.Parse( AddProID ) ) //判断购物信息表中,是否存有当前放入商品. if( nowProdID==Int32.Parse( AddProID ) )
{
hasone=true;
}
else
{
i++;
}
}
if( hasone )
{
//如果已有该商品,则 hasone=true,更改该数据行 DataRow oldDR;
oldDR=nowTable.Rows[i];
oldDR["ProdCount"]=Int32.Parse( oldDR["ProdCount"].ToString( ) )+1;
oldDR["TotalPrice"]=Int32.Parse( oldDR["ProdCount"].ToString( ) )*Double.Parse( oldDR["UnitPrice"].ToString( ) );
}
else
{
//如果没有该商品,在表中新加如一行. DataRow newDR;
double unitp;
String strcon="provider=Microsoft.jet.OLEDB.4.0;
data Source="+Server.MapPath( ConfigurationSettings.AppSettings["MDBpath2"] )+";
";
OleDbConnection myConnection = new OleDbConnection( strcon );
string strSQL= "select * from pro where product_id="+AddProID+"";
OleDbDataAdapter myCommand = new OleDbDataAdapter( strSQL, myConnection );
DataSet ds = new DataSet( );
myCommand.Fill( ds, "AddP" );
newDR=nowTable.NewRow( );
newDR[0]=AddProID;
newDR[2]=ds.Tables["Addp"].Rows[0]["product_name"].ToString( );
unitp=Double.Parse( ds.Tables["AddP"].Rows[0]["product_mem

分享到：QQ空间新浪微博腾讯微博微信百度贴吧 QQ好友复制网址打印

您可能想查找下面的文章:

2017-05-11JSON在ASP.NET中使用方法
2017-05-11asp.net 面试+笔试题目第1/2页
2017-05-11asp.net两级联动（包含添加和修改）
2017-05-11排除JQuery通过HttpGet调用WebService返回Json时“parserror”错误
2017-05-11Asp.net静态方法之Grid转DataTable方法实现步骤
2017-05-11一个简答的Access下的分页asp.net代码
2017-05-11asp.net中在用ajax格式传递数据到aspx页面时出现乱码
2017-05-11ASP.NET生成树形显示的GridView实现思路
2017-05-11Asp.net_Table控件の单元格纵向合并示例
2017-05-11创建第一个ASP.NET应用程序（第1节）

asp.net 购物车实现详细代码

您可能想查找下面的文章:

相关文章

文章分类

最近更新的内容