前台代码
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="ShoppingCartControl.ascx.cs" Inherits="UControl_ShoppingCartControl" %>
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<script type="text/javascript">
function show(productID) {
if (confirm("确实要删除吗？")) {
url = "ShoppingCart.aspx?DeleteItem=" + productID;
document.location.href = url;
}
}
</script>
<style type="text/css">
.good_them_tit{
background:url('../img/bg_tag_1.gif') repeat-x left bottom;
height:27px;
line-height:27px;
padding:0 10px;
text-align:left;
font-size:14px;
color:#222;
position:relative;
}
h1,h2,h3,h4,h5,h6{
font-size:12px;
}
h1,h2,h3,h4,h5,h6,ul,li,dl,dt,dd,form,img,p{
margin:0 auto;
padding:0;
border:none;
list-style-type:none;
}
a:link {
color: #666;
text-decoration:none;
}
.market{
text-decoration:line-through;
}
.promote_price{
color:#ff6600;
font-weight:bold;
font-size:15px;
font-family:Verdana;
}
.inputborder{
border:1px solid #ccc;
}
.fred{
color:#ff0000;
}
.bnt_number6{
width:103px;
background:url('../img/bg.gif') no-repeat -257px -31px;
}
.bnt_number2,.bnt_number4,.bnt_number6,.bnt_number8,.bnt_number10{
border:none;
height:22px;
text-align:center;
color:#fff;
cursor:pointer;
}
</style>
<h3 class="good_them_tit">
商品列表</h3>
<div style="text-align:center">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Repeater ID="Repeater1" runat="server" onitemcommand="Repeater1_ItemCommand">
<HeaderTemplate>
<table bgcolor="#dddddd" border="0" cellpadding="5"
cellspacing="1" width="100%">
<tr>
<th bgcolor="#ffffff">
商品名称</th>
<th bgcolor="#ffffff">
市场价</th>
<th bgcolor="#ffffff">
本店价</th>
<th bgcolor="#ffffff">
购买数量</th>
<th bgcolor="#ffffff">
小计</th>
<%-- <th bgcolor="#ffffff">
操作</th>--%>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td align="center" bgcolor="#ffffff" style="width:20%">
<a href='../View/ProductDetail.aspx?ProductID=<%#Eval("ID") %>' target="_blank">
<img src='../images/<%#Eval("ImgUrl")%>' width="140px" height="150px" border="0"></a><br />
<a href='../View/ProductDetail.aspx?ProductID=<%#Eval("ID") %>'target="_blank"><%#Eval("Name") %></a>
</td>
<td align="center" bgcolor="#ffffff" class="market" style="width:10%">
<%#string.Format("{0:c}",Eval("Price")) %>
</td>
<td align="center" bgcolor="#ffffff" class="promote_price" style="width:10%">
<%#string.Format("{0:c}",Eval("MemberPrice")) %>
</td>
<td align="center" bgcolor="#ffffff" style="width:10%">
<table width="100%">
<tr>
<td style="width:20%">
<asp:ImageButton ID="ImageButton1" CommandArgument='<%#Eval("ID") %>' CommandName="ReduceQuantity" runat="server" ImageUrl="../Manage/images/qmimages/symbol_2.gif" />
</td>
<td style="width:60%">
<asp:TextBox ID="txtQuantity" runat="server" Width="50px" Text='<%#Eval("Quantity") %>'></asp:TextBox>
</td>
<td style="width:20%">
<asp:ImageButton ID="ImageButton2" CommandArgument='<%#Eval("ID") %>' CommandName="AddQuantity" runat="server" ImageUrl="../Manage/images/qmimages/symbol_1.gif" />
</td>
</tr>
</table>
</td>
<td align="center" bgcolor="#ffffff" class="promote_price" style="width:10%">
<asp:Literal ID="LtSubTotal" runat="server" Text='<%#string.Format("{0:c}",Eval("SubTotal")) %>'></asp:Literal>
</td>
<%-- <td align="center" bgcolor="#ffffff" style="width:10%">
<a href='javascript:show(<%#Eval("ID") %>)'>删除</a>
</td>--%>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<asp:Literal ID="LtCartStatus" runat="server" Visible="false"></asp:Literal>
<table width="100%">
<tr>
<td colspan="4" align="right">
<font color="red"> 总金额为：<asp:Literal ID="LtTotal" runat="server"></asp:Literal></font>
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>
<table align="center" border="0" cellpadding="5" cellspacing="0" width="99%">
<tr>
<td align="center">
<a href="Default.aspx">
<img alt="continue" src="../img/bg_btn_gotobuy.gif" /></a>
<a href="../Users/Checkout.aspx">
<img alt="checkout" src="../img/bg_btn_gotocheck.gif"/></a>
</td>
</tr>
</table>
</div>
后台代码
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Services;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web.Security;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class UControl_ShoppingCartControl : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindCart();
LtTotal.Text = Profile.ShoppingCart.Total.ToString() + "元";
}
}
private void BindCart()
{
if (Profile.ShoppingCart.CartItems.Rows.Count > 0)
{
Repeater1.DataSource = Profile.ShoppingCart.CartItems;
Repeater1.DataBind();
}
else
{
LtCartStatus.Visible = true;
LtCartStatus.Text = "您的购物车还没有商品";
}
//LtTotal.Text = string.Format("{0;c}", Profile.ShoppingCart.Total.ToString());
}
protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "ReduceQuantity")
{
Profile.ShoppingCart.RemoveItem(Convert.ToInt32(e.CommandArgument));
BindCart();
LtTotal.Text = Profile.ShoppingCart.Total.ToString() + "元";
}
if (e.CommandName == "AddQuantity")
{
int RecordCount = 0;
DataTable dt = MyCompany.Factory.BLLAccess.CreateProduct().GetTabletByCondition("Product", "*", "ProductID desc", 1, 1, out RecordCount, " ProductID=" + Convert.ToInt32(e.CommandArgument) + "");
Profile.ShoppingCart.AddItem(Convert.ToInt32(e.CommandArgument), dt.Rows[0]["Title"].ToString(), Convert.ToDecimal(dt.Rows[0]["Price"]), Convert.ToDecimal(dt.Rows[0]["MemberPrice"]), dt.Rows[0]["Image"].ToString().Substring(0, dt.Rows[0]["Image"].ToString().IndexOf("|")) + ".jpg");
Profile.Save();
BindCart();
LtTotal.Text = Profile.ShoppingCart.Total.ToString()+"元";
}
}
}
BLL层购物车代码
using System;
using System.Collections.Generic;
using System.Web;
using System.Data;
using System.Data.SqlClient;
namespace MyCompany.BLL
{
/// <summary>
///ShopingCart 的摘要说明
/// </summary>
///
[Serializable]
public class ShoppingCart
{
DataTable _CartItems = new DataTable("CartItems");
public ShoppingCart()
{
CreatTable();
}
// 返回购物车中所有的商品
public DataTable CartItems
{
get { return _CartItems; }
}
// 计算购物车中所有商品的总价钱
public decimal Total
{
get
{
decimal sum = 0;
foreach (DataRow row in _CartItems.Rows)
sum += Convert.ToDecimal(row["MemberPrice"].ToString()) * Convert.ToDecimal(row["Quantity"].ToString());
return sum;
}
}
// 添加商品到购物车
public void AddItem(int ID, string Name, decimal Price,decimal MemberPrice,string ImgUrl)
{
if (_CartItems.Select("ID=" + ID).Length == 0)
{
DataRow row = _CartItems.NewRow();
row["ID"] = ID;
row["Name"] = Name;
row["Price"] = Price;
row["MemberPrice"] = MemberPrice;
row["Quantity"] = 1;
row["ImgUrl"] = ImgUrl;
row["SubTotal"] = MemberPrice;
_CartItems.Rows.Add(row);
}
else
{
foreach (DataRow row in _CartItems.Select("ID=" + ID))
{
row["Quantity"] = Convert.ToDecimal(row["Quantity"].ToString()) + 1;
row["SubTotal"] = MemberPrice * Convert.ToDecimal(row["Quantity"]);
}
}
}
// 移除购物车中的商品
public void RemoveItem(int ID)
{
if (_CartItems.Select("ID=" + ID).Length == 0)
{
return;
}
else
{
foreach (DataRow row in _CartItems.Select("ID=" + ID))
{
row["Quantity"] = Convert.ToDecimal(row["Quantity"].ToString()) - 1;
row["SubTotal"] = Convert.ToDecimal(row["MemberPrice"]) * Convert.ToDecimal(row["Quantity"]);
if (Convert.ToDecimal(row["Quantity"].ToString()) == 0)
{
_CartItems.Rows.Remove(row);
}
}
}
}
// 创建DataTable
private void CreatTable()
{
_CartItems.Columns.Add("ID", typeof(int));
_CartItems.Columns.Add("Name", typeof(string));
_CartItems.Columns.Add("Price", typeof(decimal));
_CartItems.Columns.Add("MemberPrice", typeof(decimal));
_CartItems.Columns.Add("Quantity", typeof(decimal));
_CartItems.Columns.Add("ImgUrl", typeof(string));
_CartItems.Columns.Add("SubTotal", typeof(decimal));
}
}
}
web.config 必须加上这句话
<anonymousIdentification enabled="true" />
<profile>
<properties>
<add name="ShoppingCart" type="MyCompany.BLL.ShoppingCart" allowAnonymous="true" serializeAs="Binary"/>
</properties>
</profile>
来源：https://www.cnblogs.com/kof98/archive/2010/05/25/1743608.html