main.master.cs

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using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using System.Data;
using System.Data.SqlClient;


public partial class main  : System.Web.UI.MasterPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
        
        if(!IsPostBack)
        {
            //声明购物车类
            ShopCart sc = new ShopCart();
            if (Session["sc"] != null)
            {
                sc = (ShopCart)Session["sc"];
            }
            ltTotal.Text = sc.Total.ToString();            
        }
    }



    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        Session.Abandon();
        Response.Redirect("default.aspx");
    }  

    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        if(keyword.Value=="")
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "<script>alert('关键字不能为空！');</script>");
            return;
        }

        Response.Redirect("list.aspx?k=" + Server.UrlEncode(keyword.Value));
    }
}