search.aspx.cs

是一个很好的电子商务系统,是用C#语言开发的,能够完成网上购物的功能

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class Search : System.Web.UI.Page
{
    private String strkey;
    protected void Page_Load(object sender, EventArgs e)
    {
        if(Request.QueryString["strkey"]!="")
        {
            strkey = Request.QueryString["strkey"].ToString();
        }
        if(!Page.IsPostBack)
        {
            this.GetProductSearchDataBind();
        }
    }

    private void GetProductSearchDataBind()
    {
        ProductDB pdb = new ProductDB();
        if (pdb.GetSearchProductCountByKey(strkey) > 0)
        {
            SqlDataReader Sdr = pdb.GetSearchProductDataByKey(strkey);
            this.DListSearch.DataSource = Sdr;
            this.DListSearch.DataBind();
            this.LabelMsg.Visible = false;
            Sdr.Close();
        }
        else
        {
            this.DListSearch.Visible = false;
            this.LabelMsg.Text = "没有查询到关键字所属的商品！";
        }
    }
    public String GetProductDescription(String des)
    {
        if (des.Length > 255)
        {
            return des.Substring(0, 255) + "...";
        }
        else
        {
            return des;
        }
    }
    protected void DListSearch_ItemCommand(object source, DataListCommandEventArgs e)
    {
        if (!User.Identity.IsAuthenticated)
        {
            Response.Redirect("~/login_Register.aspx");
        }
        else
        {
            Shopcart shopcart = new Shopcart();
            shopcart.CustomerID = User.Identity.Name;
            shopcart.Quantity = 1;
            shopcart.ProductID = Int32.Parse(e.CommandArgument.ToString());
            ShopcarDB Sdb = new ShopcarDB();
            if (Sdb.GetShopcartItem(shopcart) > 0)
            {
                Sdb.UpdateShopCartFirst(shopcart, true);
            }
            else
            {
                Sdb.AddShopCart(shopcart);
            }
        }
    }
   
}