購物車類

using System;
using System.Web.UI;
using System.Collections; //使用Hashtable類必須引入該命名空間
namespace EWang.BLL
{
??? [Serializable]
??? //定義商品類,保存商品的各種屬性
??? public class CarData
??? {
??????? long _pid;
??????? int _quality;
??????? decimal _price;
??????? string _chicun;
??????? string _bianhao;
??????? public long P_ID
??????? {
??????????? set { _pid = value; }
??????????? get { return _pid; }
??????? }
??????? public int Quality
??????? {
??????????? set { _quality = value; }
??????????? get { return _quality; }
??????? }
??????? public decimal Price
??????? {
??????????? set { _price = value; }
??????????? get { return _price; }
??????? }
??????? public string ChiCun
??????? {
??????????? set { _chicun = value; }
??????????? get { return _chicun; }
??????? }
??????? public string BianHao
??????? {
??????????? set { _bianhao = value; }
??????????? get { return _bianhao; }
??????? }
??????? public CarData(long pid, int qua, decimal price,string chicun,string bianhao)? //構造方法，初始化商品的各個屬性
??????? {
??????????? _pid = pid;
??????????? _quality = qua;
??????????? _price = price;
??????????? _chicun = chicun;
??????????? _bianhao = bianhao;
??????? }
??? }
???
??? [Serializable]
??? public class ShoppingCart
??? {

??????? Hashtable Cart_Orders = new Hashtable();

??????? public ICollection Orders
??????? {
??????????? get { return Cart_Orders.Values; }

??????? }
??????? /// <summary>
??????? /// 所有商品編號列表
??????? /// </summary>
??????? public string OrdersPidList
??????? {
??????????? get
??????????? {
??????????????? int flag = 0;
??????????????? System.Text.StringBuilder strprolist = new System.Text.StringBuilder();
??????????????? foreach (DictionaryEntry entry in Cart_Orders)
??????????????? {
??????????????????? CarData order = (CarData)entry.Value;
??????????????????? if (flag == 0)
??????????????????? {
??????????????????????? strprolist.Append(order.P_ID);
??????????????????????? flag = 1;
??????????????????? }
??????????????????? else
??????????????????? {
??????????????????????? strprolist.Append("|" + order.P_ID);
??????????????????? }
??????????????? }
??????????????? return strprolist.ToString();
??????????? }
??????? }
??????? public string OrdersList
??????? {
??????????? get
??????????? {
??????????????? int flag = 0;
??????????????? System.Text.StringBuilder strprolist = new System.Text.StringBuilder();
??????????????? foreach (DictionaryEntry entry in Cart_Orders)
??????????????? {
???????????????????? CarData order = (CarData)entry.Value;
???????????????????? if (flag == 0)
???????????????????? {
???????????????????????? strprolist.Append(order.P_ID + "," + order.Price + "," + order.Quality + "," + (order.Price * order.Quality)+","+order.ChiCun+","+order.BianHao);
???????????????????????? flag = 1;
???????????????????? }
???????????????????? else
???????????????????? {
???????????????????????? strprolist.Append("|" + order.P_ID + "," + order.Price + "," + order.Quality + "," + (order.Price * order.Quality) + "," + order.ChiCun+","+order.BianHao);
???????????????????? }
??????????????? }
??????????????? return strprolist.ToString();
??????????? }
??????? }
??????? //public Hashtable Orders
??????? //{
??????? //??? get { return Cart_Orders; }
??????? //}
??????? //計算總數量
??????? public int TotalQuality
??????? {
??????????? get
??????????? {
??????????????? Int32 total = 0;
??????????????? foreach (DictionaryEntry entry in Cart_Orders)
??????????????? {
??????????????????? CarData order = (CarData)entry.Value;
??????????????????? total +=order.Quality;
??????????????? }
??????????????? return total;
??????????? }
??????? }
??????
??????? //計算總價格
??????? public decimal TotalCost
??????? {
??????????? get
??????????? {
??????????????? decimal total = 0;
??????????????? foreach (DictionaryEntry entry in Cart_Orders)
??????????????? {
??????????????????? CarData order = (CarData)entry.Value;
??????????????????? total += (order.Price * order.Quality);
??????????????? }
??????????????? return total;
??????????? }
??????? }
??????? //添加物件方法
??????? public void AddItem(CarData Order)
??????? {
??????????? CarData order = (CarData)Cart_Orders[Order.P_ID.ToString ()];
??????????? if (order != null)
??????????????? order.Quality += Order.Quality;
??????????? else
??????????????? Cart_Orders.Add(Order.P_ID.ToString (), Order);
??????? }
??????? //刪除物件
??????? public void DeleteItem(long ItemID)
??????? {
??????????? if (Cart_Orders[ItemID.ToString()] != null)
??????????????? Cart_Orders.Remove(ItemID.ToString());??????????????
??????? }
??????? //更新購物車數量
??????? public void UpdateQuality(long ItemID,int quality)
??????? {
??????????? CarData order = (CarData)Cart_Orders[ItemID.ToString()];
??????????? if (quality > 0)
??????????? {
??????????????? order.Quality = quality;
??????????????? Cart_Orders[ItemID.ToString()] = order;
??????????? }
??????? }
??????? //更新價格
??????? public void UpdatePrice(long ItemID, decimal price)
??????? {
??????????? CarData order = (CarData)Cart_Orders[ItemID.ToString()];
??????????? order.Price = price;
??????????? Cart_Orders[ItemID.ToString()] = order;???????????
??????? }
??????? //更新購物車所有商品的價格
??????? public ShoppingCart UpdateAllPrice(int usertype, ShoppingCart car)
??????? {
???????????
??????????? EWang.BLL.Product_Data bll = new Product_Data();
??????????? long pid=0L;
??????????? decimal hyprice=0.0M;
??????????? foreach (DictionaryEntry entry in car.Cart_Orders)
??????????? {
??????????????? CarData order = (CarData)entry.Value;
??????????????? string strkey = entry.Key.ToString();
??????????????? pid = order.P_ID;
??????????????? switch (usertype)
??????????????? {
??????????????????? case 1:
??????????????????????? hyprice = bll.GetHYPrice(pid);
??????????????????????? break;
??????????????????? case 2:
??????????????????????? hyprice = bll.GetHYPrice1(pid);
??????????????????????? break;
??????????????????? case 3:
??????????????????????? hyprice = bll.GetHYPrice2(pid);
??????????????????????? break;
??????????????? }
??????????????? order.Price = hyprice;
??????????????? car.Cart_Orders[strkey] = order;
??????????? }
??????????? return car;
??????? }
??????? /// <summary>
??????? ///清空購物車
??????? /// </summary>
??????? public void ClearAll()
??????? {
??????????? Cart_Orders.Clear();
??????? }
??? }
}

?

?

前臺頁面View_ShoppingCart.aspx

<script language="javascript"?? type="text/javascript">
??? function?? trim(str){return?? str.replace(/^\s+|\s+$/,'')}
??? function checkisempty(obj)
?{??
??if(trim(obj.value)=="")
??{
???obj.value="1";
??}??
?}
</script>

?

<table width="807" border="0" align="center" cellpadding="0" cellspacing="0">
??????? <tr>
????????? <td width="10"><img src="images/d01_01.jpg" width="10" height="29" /></td>
????????? <td width="97" background="images/d01_bj.jpg"><table width="95%" border="0" align="center" cellpadding="0" cellspacing="0">
??????????? <tr>
????????????? <td align="center" valign="middle" class="shoujia">您訂購的商品</td>
??????????? </tr>
??????????? <tr>
????????????? <td align="center" valign="middle"><img src="images/sanjiao04.jpg" width="7" height="4" /></td>
??????????? </tr>
????????? </table></td>
????????? <td width="4"><img src="images/d01_02.jpg" width="4" height="29" /></td>
????????? <td width="696" background="images/d01_03.jpg"><table width="95%" border="0" align="center" cellpadding="0" cellspacing="0">
??????????? <tr>
????????????? <td align="center" class="top5">商品名稱</td>
????????????? <td width="80" align="center" class="top5">編號</td>
????????????? <td width="80" align="center" class="top5">尺寸</td>
????????????? <td width="80" align="center" class="top5">單價</td>
????????????? <td width="80" align="center" class="top5">數量</td>
????????????? <td width="80" align="center" class="top5">小計</td>
????????????? <td width="80" align="center" class="top5">刪除</td>
??????????? </tr>
????????? </table></td>
??????? </tr>
????? </table>????
????????? <form id="form1" runat="server" style="0px auto; padding:0px;">
????????? <table width="807" border="0" align="center" cellpadding="0" cellspacing="0">
????????? <asp:Repeater ID="RepeaterCar" runat="server" EnableViewState="True" >
?????????? <ItemTemplate>
??????????
??????? <tr>
????????? <td width="110" height="120" align="center" valign="middle">
????????? <img src="<%#getPic(DataBinder.Eval( Container.DataItem,"P_ID" ))%>" width="90" height="100" />
????????? </td>
????????? <td width="252" align="center" valign="middle" class="sousuo"><%#getProductName(DataBinder.Eval(Container.DataItem, "P_ID"))%></td>
????????? <td width="91" align="center" valign="middle" class="sousuo"><%#DataBinder.Eval( Container.DataItem,"BianHao" )%></td>
????????
????????? <td width="91" align="center" valign="middle" class="sousuo"><%#DataBinder.Eval( Container.DataItem,"ChiCun" )%></td>
????????? <td width="85" align="center" valign="middle" class="sousuo"><%#DataBinder.Eval(Container.DataItem, "Price","{0:c}")%></td>
????????? <td width="86" align="center" valign="middle"><asp:TextBox? EnableViewState="true"? CssClass="inputnormal" ID="TextBox1" runat="server" Text='<%#DataBinder.Eval( Container.DataItem,"Quality" )%>' οnblur="checkisempty(this);"></asp:TextBox></td>
????????? <td width="87" align="center" valign="middle" class="sousuo"><%#CalTotal(DataBinder.Eval(Container.DataItem, "Price"), DataBinder.Eval(Container.DataItem, "Quality"))%></td>
????????? <td width="96" align="center" valign="middle" class="sousuo"> <asp:Label ID="LabPID" runat="server" Text='<%#DataBinder.Eval( Container.DataItem,"P_ID" )%>' Visible="false"></asp:Label>
??????? <a href="View_ShoppingCart.aspx?act=del&pid=<%#DataBinder.Eval( Container.DataItem,"P_ID" )%>" class="top1">刪除</a></td>
??????? </tr>????????
????
????????? </ItemTemplate>???
????????? <SeparatorTemplate>
?????????? <tr>
????????? <td height="1" colspan="8" bgcolor="#CCCCCC"></td>
??????? </tr>
????????? </SeparatorTemplate>
????? </asp:Repeater>
?????? </table>
????? <table width="807" border="0" align="center" cellpadding="0" cellspacing="0">
??????? <tr>
????????? <td width="440" height="50" align="left" valign="middle"><a href="Default.aspx"><img src="images/d02.jpg" width="114" height="31" border="0" /></a></td>
????????? <td align="center" valign="middle" class="top9">總計：<asp:Literal ID="LitZJ" runat="server" EnableViewState="false"></asp:Literal></td>
????????? <td align="right" valign="middle">
????????????? <asp:ImageButton ID="btnClear" runat="server" OnClick="btnClear_Click" style="cursor:hand;" ImageUrl="images/d03.jpg" Height="22px" ImageAlign="AbsMiddle" Width="103px" />
????????????? </td>
????????? <td align="right" valign="middle">
????????????? <asp:ImageButton ID="BtnSave" OnClick="BtnSave_Click" runat="server" Height="22px" ImageAlign="AbsMiddle"
????????????????? ImageUrl="images/d04.jpg" Width="103px" style="cursor:hand;"/></td>
??????? </tr>
??????? <tr>
????????? <td height="40" colspan="4" align="center" valign="middle"><a href="MakeOrder.aspx"><img src="images/d05.jpg" width="125" height="30" border="0" /></a></td>
??????? </tr>
????? </table>
????? </form>

代碼文件:View_ShoppingCart.aspx.cs文件

?

?protected void Page_Load(object sender, EventArgs e)
??? {

??????? //if (EWang.BLL.Users.isLogin() == false)
??????? //{

??????? //??? string message = "window.alert('你還沒有登錄,請選擇后再進行本次操作!');window.location.href='Login.aspx';";
??????? //??? MessageBox.ResponseScript(this, message);
??????? //??? return;
??????? //}
??????? //else
??????? //{

??????????? if (Request.QueryString["act"] == "del")
??????????? {
??????????????? delPro();
??????????? }
??????????? else if (Request.QueryString["act"] == "add")
??????????? {
??????????????? this.AddItemToCart();
??????????? }
??????????? else
??????????? {
??????????????? if (!this.IsPostBack)
??????????????? {
??????????????????? this.BindShoppingCart();
??????????????? }
??????????? }
??????????? this.strtitle = "我的購物車" + "-" + WebBasicInfo.sitename;
??????????? this.strkeywords = WebBasicInfo.keyword;
??????????? this.webSiteDesc = WebBasicInfo.webintro;
??????????? // Freeze(string.Format(@"{0}.htm", Request.Url.ToString()));
??????? //}
???????
??? }
??? private void AddItemToCart()
??? {
??????? string url="";
??????? if (Request.UrlReferrer != null)
??????? {
??????????? url = Request.UrlReferrer.ToString();
??????? }
???????
??????? string pid = Request["proid"].ToString();??????
??????? string quality = Request["quality"].ToString();
??????? string price=Request["price"].ToString ();
??????? string ishavesize = Request["ishavesize"].ToString();
??????? string bianhao = Request["hidbianhao"].ToString();
??????? if (bianhao.Trim() == "")
??????? {
??????????? bianhao = "無";
??????? }
??????? string chicun = "無";
??????? if (ishavesize == "1")
??????? {
??????????? chicun = Request["selSize"].ToString().Trim ();???????????
??????????? if (chicun == "")
??????????? {
??????????????? MessageBox.ResponseScript("alert('保存成功！');location.href='"+url+"';");????????????
??????????? }
??????? }
??????? EWang.BLL.Product_Data bll = new EWang.BLL.Product_Data();
??????? int num = bll.GetPNum(long.Parse(pid));
??????? int qua = int.Parse(quality);

??????? if ((num <= 0 || num - qua <= 0)&&url!="")
??????? {
??????????? if (url.IndexOf("&h=u") > 0)
??????????? {

??????????? }
??????????? else
??????????? {
??????????????? url = url + "&h=u";
??????????? }
??????????? Response.Redirect(url);
??????? }
??????? EWang.BLL.CarData order = new EWang.BLL.CarData(long.Parse(pid), Int32.Parse(quality), decimal.Parse(price), chicun, bianhao);
??????? EWang.BLL.ShoppingCart cart = (EWang.BLL.ShoppingCart)Session["MyShoppingCart"]; //創建實例

??????? if (cart != null)
??????? {
??????????? cart.AddItem(order);
??????????? Session["MyShoppingCart"] = cart;
??????????? Response .Redirect("View_ShoppingCart.aspx");
??????? }

??? }
??? private void delPro()
??? {
??????? if (string.IsNullOrEmpty(Request.QueryString["pid"]))
??????? {
??????????? Server.Transfer("View_ShoppingCart.aspx");
??????? }
??????? else
??????? {
??????????? string strpid = Request.QueryString["pid"].ToString().Trim();
??????????? EWang.BLL.ShoppingCart cart = (EWang.BLL.ShoppingCart)(Session["MyShoppingCart"]);
??????????? cart.DeleteItem(long.Parse(strpid));
??????????? Session["MyShoppingCart"] = cart;
??????????? Response.Redirect("View_ShoppingCart.aspx");
??????? }
??? }
??? private void BindShoppingCart()
??? {
??????? EWang.BLL.ShoppingCart cart = (EWang.BLL.ShoppingCart)(Session["MyShoppingCart"]);
??????? if (cart != null)
??????? {
??????????? this.RepeaterCar.DataSource = cart.Orders;
??????????? this.RepeaterCar.DataBind();
?????????? // this.LitXJ.Text = string.Format("{0:c}", cart.TotalCost);
??????????? this.LitZJ.Text = string.Format("{0:c}", cart.TotalCost);
??????? }
??? }
??? public string getPic(object obj)
??? {
??????? EWang.BLL.Product_Data bll = new EWang.BLL.Product_Data();
??????? return EWang.Common.FormatData.getImgSrc(bll.GetPic(long.Parse(obj.ToString ())));
??? }
??? public string getProductName(object obj)
??? {
??????? EWang.BLL.Product_Data bll = new EWang.BLL.Product_Data();
??????? return bll.GetProductName(long.Parse(obj.ToString ()));
??? }
??? public string CalTotal(object price, object quality)
??? {
??????? decimal total=decimal.Parse(price.ToString ()) * Int32.Parse(quality.ToString ());
??????? return string.Format("{0:c}",total);
??? }
??? protected void BtnSave_Click(object sender, EventArgs e)
??? {
??????
??????????? Label lblPID = new Label();
??????????? TextBox txtQua=new TextBox ();
??????????? EWang.BLL.ShoppingCart cart = (EWang.BLL.ShoppingCart)(Session["MyShoppingCart"]);
??????????? foreach (RepeaterItem li in this.RepeaterCar.Items)
??????????? {
??????????????? lblPID = (Label)(li.FindControl("LabPID"));
??????????????? txtQua = (TextBox)(li.FindControl("TextBox1"));
??????????????? cart.UpdateQuality(long .Parse(lblPID.Text.Trim ()),int.Parse(txtQua.Text.Trim ()));
??????????? }
??????????? Session["MyShoppingCart"] = cart;
??????????? Response.Redirect("View_ShoppingCart.aspx");
???????
??? }
??? protected void btnClear_Click(object sender, EventArgs e)
??? {
??????? EWang.BLL.ShoppingCart cart = (EWang.BLL.ShoppingCart)(Session["MyShoppingCart"]);
??????? cart.ClearAll();
??????? Session["MyShoppingCart"] = cart;
??????? Response.Redirect("View_ShoppingCart.aspx");
??? }

轉載于:https://www.cnblogs.com/ymyglhb/archive/2009/05/19/1460122.html

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