bookList.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
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.Xml.Linq;

namespace 网上订餐系统
{
    public partial class boollist : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

            if (Session["UID"] == null)
            {
                Response.Write("<script>alert('请先登陆！');window.location.href='Default.aspx';</script>");
            }
            else
            {

                ListBind();

            }
  

        }


        public void ListBind()
        {
            if (Session["Car"] != null)
            {
                this.GridBookList.DataSource = Session["Car"];
                GridBookList.DataBind();
                float money = 0;
                DataTable dt = Session["Car"] as DataTable;
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    money += float.Parse(dt.Rows[i]["总价"].ToString());
                }


                Label总金额.Text = money.ToString();
            }
            else
            {
                PanelBookList.Visible = false;
                Literal提示.Text = "您的购物车中没有物品！";

            }

        }