webform 购物车小程序，主要学习session的使用
实现一个简单的购物网站
一、考试时间：8小时
二、开发工具：VS2005+Sql2000
三、数据库：见附件
四、需要实现的页面：
Index.aspx：浏览商品页面，显示商品列表，用户可以点击“购买“。
ViewCart.aspx：查看购物车页面，显示已购买的商品信息，可以点击“删除“已买的商品
ViewAccount.aspx：查看个人账户余额
Login.aspx：登录页面
建议使用的技术：母版页、GridView、泛型集合、自定义实体类、自定义数据库访问类、其它常Web控件。
五、实现功能：
1、 显示商品列表
2、 实现购买功能，购买的时候动态显示购物车中的商品数量和商品总价格
3、 点击查看购物车后，显示已购买的商品。注意“购买数量”列，如果对一种商品点击购买多次，其“购买数量”不断增加。
4、 删除购物车中已购买的商品。
如果某商品的“购买数量”为1时，则点击“删除”时，直接从购物车中删除该商品；
如果商品的“购买数量”大于1时，点击一次“删除”时，把其购买数量减1。直到该商品购买数量为1时，再点击删除时，删除该商品
5、 在查看完购物车后还可以点击“浏览商品”继续购买。并在上面显示已购买的商品数量和总价格。
6、 在“查看购物车“后，可以提交订单
但在提交订单时，须完成以下功能：
a) 检查用户是否已登录，未登录则转到Login.aspx页面
b) 检查用户账户余额是否能够满足本次够买
c) 检查库存数量是否满足本次够买
d) 如果以上条件都满足则
- i. 从用户账户中扣除本次购买的总价格
- ii. 从商品库存中扣除本次每种商品的购买数量
- iii. 向订单表和订单内容表中加入本次购买的商品信息
7、 点击查看账户，可以查看该用户的账户余额。
对数据库操作的方法代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; /// <summary> /// FruitBF 的摘要说明 /// </summary> public class FruitBF { private DataClassesDataContext _Context; public FruitBF() { // // TODO: 在此处添加构造函数逻辑 // _Context = new DataClassesDataContext(); } public Fruit Select(string ids) { var query=_Context.Fruit.Where(p => p.Ids == ids); if (query.Count()>0) { return query.First(); } return null; } public List<Fruit> Select() { return _Context.Fruit.ToList(); } public void update(Fruit data) { Fruit newdata = _Context.Fruit.Where(p => p.Ids == data.Ids).First(); newdata.Numbers = data.Numbers; _Context.SubmitChanges(); }
using System; using System.Collections.Generic; using System.Linq; using System.Web; /// <summary> /// OrderDetailsBF 的摘要说明 /// </summary> public partial class OrderDetails { private DataClassesDataContext _Context = new DataClassesDataContext(); public string FruitName { //相关子查询，用订单表里水果编号查询水果表里水果的名字 get { var query = _Context.Fruit.Where(p => p.Ids == this.FruitCode); if (query.Count() > 0) { return query.First().Name; } return ""; } } public decimal FruitPrice { get { var query = _Context.Fruit.Where(p => p.Ids == this._FruitCode); if (query.Count() > 0) { return query.First().Price.Value; } return 0; } } public List<OrderDetails> Select() { return _Context.OrderDetails.ToList(); } }
主界面aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <style> .tr1 { text-align:center; background-color:#0094ff; font-weight:bolder; } .tr2 { text-align:center; background-color:#ffd800; } .tr3 { text-align:center; } #id1 { top:0px; left:300px; } #id2 { position:absolute; top:165px; left:100px; } </style> </head> <body> <form id="form1" runat="server"> <div class="ddd"> <div id="id2" class="ddd"> <p><a href="Default.aspx">浏览商品</a></p> <p> <a href="zhanghu.aspx">查看账户</a></p> <p> <a href="gouwuche.aspx">查看购物车</a></p> <p><a href="denglu.aspx">登录</a></p> </div> <div id="id1"> <center><h1><font color="blue">大苹果购物网</font></h1></center> <asp:Literal ID="Literal1" runat="server"></asp:Literal> <br /> <asp:Literal ID="Literal2" runat="server"></asp:Literal> <asp:Repeater ID="Repeater1" runat="server"> <HeaderTemplate> <center> <table width="55%" border="1"><tr class="tr1"><td>编号</td><td>名称</td> <td>价格</td><td>产地</td><td>货架</td><td>库存</td><td>购买</td></tr> </HeaderTemplate> <ItemTemplate> <tr class="tr2"><td><%#Eval("Ids") %></td><td><%#Eval("Name") %></td><td><%#Eval("Price") %></td><td><%#Eval("Source") %></td> <td><%#Eval("Stack") %></td><td><%#Eval("Numbers") %></td><td><a href="buy.aspx?id=<%#Eval("Ids") %>">购买</a></td></tr> </ItemTemplate> <AlternatingItemTemplate> <tr class="tr3"><td><%#Eval("Ids") %></td><td><%#Eval("Name") %></td><td><%#Eval("Price") %></td><td><%#Eval("Source") %></td> <td><%#Eval("Stack") %></td><td><%#Eval("Numbers") %></td><td><a href="buy.aspx?id=<%#Eval("Ids") %>">购买</a></td></tr> </AlternatingItemTemplate> <FooterTemplate> </table></center> </FooterTemplate> </asp:Repeater> </div> </div> </form> </body> </html>
主界面aspx.cs代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (Session["data"]==null) { Response.Redirect("denglu.aspx"); } DataClassesDataContext _Context = new DataClassesDataContext(); Repeater1.DataSource = _Context.Fruit.ToList(); Repeater1.DataBind(); int count; decimal cost; if (Session["cart"] == null) { count = 0; cost = 0; } else { List<OrderDetails> list = Session["cart"] as List<OrderDetails>; count = list.Count(); //计算总钱数，记住这个代码！！！！！！ cost = list.Sum(p=>p.Count*p.FruitPrice).Value; } Literal1.Text = "您已经购买了" + count + "种水果，您当前的花费为" + cost + "元"; Session["cost"] = cost; Session["count"] = count; } }
登录界面aspx代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="denglu.aspx.cs" Inherits="denglu1" %> <!DOCTYPE html> <script runat="server"> </script> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <style> #id1 { top:0px; left:300px; } #id2 { position:absolute; top:90px; left:200px; } </style> </head> <body> <form id="form1" runat="server"> <div id="id2"> <p><a href="Default.aspx">浏览商品</a></p> <p> <a href="zhanghu.aspx">查看账户</a></p> <p> <a href="gouwuche.aspx">查看购物车</a></p> </div> <div id="id1"> <asp:Literal ID="Literal1" runat="server"></asp:Literal> <center><h1><font color="blue">大苹果购物网</font></h1></center> <br /> <p> 用户名：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> </p> <p> 密码：<asp:TextBox ID="TextBox2" runat="server" TextMode="Password"></asp:TextBox> </p> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /> </div> </form> </body> </html>
登录界面aspx.cs代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class denglu1 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (Session["data"] == null) { Literal1.Text = "请先登录！"; } } protected void Button1_Click(object sender, EventArgs e) { string name = TextBox1.Text; string pass = TextBox2.Text; Session["name"] = name; Login data = new LoginBF().Select(name,pass); string yonghuming = data.UserName; Session["yonghuming"] = yonghuming; Session["data"] = data; if (data != null) { Response.Redirect("Default.aspx"); } else { Response.Write("<script>alert('登录失败')</script>"); TextBox1.Text = null; TextBox2.Text = null; } } }
购物车aspx代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="gouwuche.aspx.cs" Inherits="gouwuche" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <style> .tr1 { text-align:center; background-color:#0094ff; font-weight:bolder; } .tr2 { text-align:center; background-color:#ffd800; } .tr3 { text-align:center; } #id1 { top:0px; left:300px; } #id2 { position:absolute; top:105px; left:160px; } </style> </head> <body> <form id="form1" runat="server"> <div id="id2"> <p><a href="Default.aspx">浏览商品</a></p> <p> <a href="zhanghu.aspx">查看账户</a></p> <p> <a href="gouwuche.aspx">查看购物车</a></p> </div> <div id="id1"> <center><h1><font color="blue">大苹果购物网<asp:ScriptManager ID="ScriptManager2" runat="server"> </asp:ScriptManager> </h1> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> </asp:UpdatePanel> <h1></font></h1></center> <br /> 购物车中有以下几种产品: <asp:Literal ID="Literal1" runat="server"> </asp:Literal> <span id="span1" style="display:none; color:#F66">账户余额不足</span> <span id="span2" style="display:none; color:#F66">苹果库存不足</span> <asp:UpdatePanel ID="UpdatePanel2" runat="server"> <ContentTemplate> <font color="red"> <asp:Literal ID="Literal3" runat="server"></asp:Literal> </br> <asp:Literal ID="Literal2" runat="server"></asp:Literal> </br> </font> <asp:Button ID="Button1" runat="server" Text="提交订单" OnClick="Button1_Click" /> </ContentTemplate> </asp:UpdatePanel> </div> </form> </body> </html>
购物车aspx.cs代码
using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class gouwuche : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (Session["data"] == null) { Response.Redirect("denglu.aspx"); } if (Session["cart"] != null) { List<OrderDetails> list = Session["cart"] as List<OrderDetails>; Session["linshi"] = list; string s = " <center><table width=' 35%' border='1'><tr class='tr1'><td>编号</td><td>名称</td><td>价格</td><td>数量</td><td>删除</td></tr>"; foreach (OrderDetails data in list) { s += "<tr class='tr2'><td>" + data.FruitCode + "</td><td>" + data.FruitName + "</td><td>" + data.FruitPrice + "</td><td>" + data.Count + "</td><td><a href='shanchu.aspx?ids=" + data.FruitCode + "'>删除</a></td></tr>"; } s += "</table></center>"; Literal1.Text = s; } } //当点击提交订单的时候 protected void Button1_Click(object sender, EventArgs e) { Orders data3 = new Orders(); data3.Code = Session["name"].ToString(); data3.UserName = Session["yonghuming"].ToString(); data3.OrderTime = DateTime.Now; new OrderBF().Insert(data3); string name = Session["name"].ToString(); Login data = new LoginBF().Select(name); decimal zhanghu = Convert.ToDecimal(data.Account); decimal cost =Convert.ToDecimal( Session["cost"]); decimal yue = zhanghu-cost; Session["yue"] = yue; if (zhanghu >=cost) { Literal2.Text = "您的账户余额为" + yue + "元"; } else if(cost > zhanghu) { //Response.Write("<script> span1.style.display='block'</script>"); Literal2.Text = "账户余额不足！"; Button1.Enabled = false; } ArrayList all = new ArrayList(); //List<OrderDetails> list= Session["cart"] as List<OrderDetails>; List<OrderDetails> list = Session["linshi"] as List<OrderDetails>; //a是购买le几种水果 int a = Convert.ToInt32(Session["count"]); //把购买的水果编号放在集合里 foreach (OrderDetails data2 in list) { all.Add(data2.FruitCode); } //通过购买的水果编号来查询这个水果编号的库存并进行比较 //这个集合用来放购买的库存不足的水果名称 ArrayList allshuiguo = new ArrayList(); Fruit data1 = new Fruit(); string neirong = ""; for (int i = 0; i < a; i++) { //通过购物车里的水果编号查询水果表相对应的水果库存 data1 = new FruitBF().Select(all[i].ToString()); if (list[i].Count<data1.Numbers) { allshuiguo.Add(list[i].FruitName); neirong = neirong + allshuiguo[i].ToString()+"、"; Literal3.Text = neirong +"这"+allshuiguo.Count+"种水果的库存不足"; } data1.Numbers = data1.Numbers - list[i].Count; //循环调用修改方法，对数据库的数量进行修改 new FruitBF().update(data1); } Session.Remove("cart"); } }
删除界面aspx 代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="shanchu.aspx.cs" Inherits="shanchu" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> </head> <body> <form id="form1" runat="server"> <div> </div> </form> </body> </html>
删除界面aspx.cs代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class shanchu : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string ids = Request["ids"]; if (Session["cart"] == null) { List<OrderDetails> temp = new List<OrderDetails>(); Session["cart"] = temp; } List<OrderDetails> list = Session["cart"] as List<OrderDetails>; //判断删除的水果是不是只有一个 var query = list.Where(P => P.FruitCode == ids); if (query.Count() > 0) { OrderDetails data = query.First(); if (data.Count > 1) //证明以前买过，数量减减就行了 { data.Count--; //减去一个水果后的价格和数量 } else { list.Remove(data); //删除这种水果后计算的价格及删除后的种类的数量 } } int count; decimal cost; if (Session["cart"] == null) { count = 0; cost = 0; } else { List<OrderDetails> list1= Session["cart"] as List<OrderDetails>; count = list1.Count(); //计算总钱数，记住这个代码！！！！！！ cost = list.Sum(p => p.Count * p.FruitPrice).Value; } Session["cost"] = cost; Session["count"] = count; Response.Redirect("gouwuche.aspx"); } }
查看账户aspx代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="zhanghu.aspx.cs" Inherits="zhanghu" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <style> #div1 { position:absolute; width:200px; height:150px; top:100px; left:400px; background-color:#b6ff00; } </style> </head> <body> <center><h1><font color="blue">大苹果购物网</font></h1></center> <br/> <p> <a href="Default.aspx">浏览商品</a></p> <p> <a href="zhanghu.aspx">查看账户</a></p> <p> <a href="gouwuche.aspx">查看购物车</a></p> <p> <a href="denglu.aspx">登录</a></p> <div id="div1"> <asp:Literal ID="Literal1" runat="server"></asp:Literal> </div> </body> </html>
查看账户aspx.cs代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class zhanghu : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (Session["data"] == null) { Response.Redirect("denglu.aspx"); } else { string user = Session["name"].ToString(); Login data = new LoginBF().Select(user); if (Session["cart"] == null) { Literal1.Text = "您的账户余额为" + data.Account + "元"; } else { decimal cost = Convert.ToDecimal( Session["cost"]); Literal1.Text = "您的账户余额为" + (data.Account-cost) + "元"; } } } }