userControl/ProductModule.ascx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
namespace MyPetShop.userControl
{
    public partial class Product : System.Web.UI.UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Panel1.Visible = false;

        }
        protected void LinkButton_LinkClicked(object sender, System.Web.UI.WebControls.DataListCommandEventArgs e)
        {
            if (e.CommandName == "buy")
            {
                string url = "~/ShopCart.aspx?ProductId=" + e.CommandArgument.ToString();
                Response.Redirect(url);
            }
            if (e.CommandName == "Pingjia")
            {
                Panel1.Visible = true;
                DB db = new DB();
                SqlConnection con = db.GetCon();//连接数据库
                con.Open();//打开连接
                SqlCommand cmd = new SqlCommand("select * from PingjiaProc where ProductId='" + e.CommandArgument.ToString() + "'", con);
                SqlDataReader sdr = cmd.ExecuteReader();
                sdr.Read();
                string str=sdr["Pingjia"].ToString();
                TextBox1.Text = str;
            }
        }
    }
}