如何维护购物车 [英] How To Maintain Shopping Cart

问题描述

//这是我的aspx页面

//this is my aspx page

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage/Main.master" AutoEventWireup="true"

    CodeFile="ShowProduct.aspx.cs" Inherits="Guest_ShowProduct" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <center>
        <table width="100%">
            <asp:DataList ID="dtlist" runat="server" RepeatColumns="4" RepeatDirection="Horizontal"

                OnItemCommand="dtlist_ItemCommand" OnItemDataBound="dtlist_ItemDataBound">
                <ItemTemplate>
                    <table>
                        <tr>
                            <td>
                                <asp:ImageButton ID="imgPic" runat="server" Height="150px" Width="150px" CommandName="Cart"

                                    ImageUrl='<%# Eval("image") %>' />
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblid" runat="server" Text='<%# Eval("uniqueid")%>'></asp:Label>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblProductName" runat="server" Text='<%# Eval("productName")%>'></asp:Label>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblPrice" runat="server" Text='<%#  Eval("Amount") %>'></asp:Label>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:LinkButton ID="lnkAdd" runat="server" PostBackUrl="~/Guest/AddToCart.aspx">Add To Cart</asp:LinkButton>
                            </td>
                        </tr>
                    </table>
                </ItemTemplate>
            </asp:DataList>
        </table>
    </center>
</asp:Content>

.CS文件

.CS file

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

public partial class Guest_ShowProduct : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            showproduct();
           
        }

        

    }
    public void showproduct()
    {
        d_ProductDetails d = new d_ProductDetails();
        DataTable dt = new DataTable();
        dt = d.getProduct();
        if (dt != null && dt.Rows.Count > 0)
        {
            dtlist.DataSource = dt;
            dtlist.DataBind();
        }
    }
    public void collectItem()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("ProductID", typeof(string));
        dt.Columns.Add("ProductName", typeof(string));
        dt.Columns.Add("ProductCost", typeof(string));
        dt.Columns.Add("ProductImage", typeof(string));
        Session["collect"] = dt;

    }

    protected void dtlist_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        
    }
    public void cart()
    { 
    
    }
    protected void dtlist_ItemCommand(object source, DataListCommandEventArgs e)
    {
         DataTable dt = (DataTable)Session["collect"];
        if (e.CommandName == "Cart")
        {
            if (Session["collect"] == null)
            {
                DataRow dr = dt.NewRow();
                DataList rowSelect = (DataList)(((ImageButton)e.CommandSource).NamingContainer);
                Label Product = (Label)rowSelect.FindControl("lblProductName");
                Label price = (Label)rowSelect.FindControl("lblPrice");
                Label id = (Label)rowSelect.FindControl("lblid");
            
                dr["ProductID"] = id.Text;
                dr["ProductCost"] = price.Text;
                dr["ProductName"] = Product.Text;
                
                dt.Rows.Add(dr);

                Session["collect"] = dt;
            }
            else
            {
                var cart = (List<string>)Session["Cart"];
                foreach (var product in cart)
                {
                    cart.Add(product);
                    Session["Cart"] = cart;
                }
            }
        }
    }
}

现在我想保留我的所有项目session [CART]

怎么做...

先谢谢

Now i want to retain my all item on my session ["CART"]
how to do this ...
Thanks in Advance

推荐答案

你好，

您可以通过使用System.Data.DataTable类使用临时表来完成此操作意味着您可以创建一个包含所有项目的数据表。现在如果你想保留这些项目直到你登录，那么只需将这个数据表分配到会话变量中，每当你想使用这个数据表时，只需将Session变量转换为数据表并再次使用这个数据表。

try它会起作用。

Hi,
You can do this by using temporary table by using System.Data.DataTable class means you can create a datatable which holds your all items. now if you want to retain these items till you are logged in then just assign this datatable into session variable and whenever you want to use this datatable just cast Session variable into datatable and use this datatable again.
try this it will worked.

shopping-cart [ ^ ]



查看链接..这将让您了解如何维护购物车..

shopping-cart[^]

Check the link..this will give you the idea how to maintain the cart..

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