后台生成的table的内容，aspx页面修改后想在后台获取修改后的值。然后。。。。。


Aspx页面：<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="electric.aspx.cs" Inherits="_1.electric" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        家电类<br />
        <br />
        <asp:Label ID="Label1" runat="server" Text="电视"></asp:Label>
        <asp:TextBox ID="TextBox1" runat="server" Width="40px"></asp:TextBox>
        <br />
        <asp:Label ID="Label2" runat="server" Text="冰箱"></asp:Label>
        <asp:TextBox ID="TextBox2" runat="server" Width="40px"></asp:TextBox>
        <br />
        <asp:Label ID="Label3" runat="server" Text="洗衣机"></asp:Label>
        <asp:TextBox ID="TextBox3" runat="server" Width="40px"></asp:TextBox>
        <br />
        <asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="提交" />
        <br />
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="查看购物车" />
    
        <br />
        <br />
        <asp:Table ID="Table1" runat="server"><!--table 在这儿-->
        </asp:Table>
        <br />
        <asp:Button ID="Button3" runat="server" onclick="Button3_Click" Text="修改" />
    
    </div>
    </form>
</body>
</html>
后台处理：using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;namespace _1
{
    public partial class electric : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Session["goods"] == null)
            {
                DataSet ds = new DataSet();
                ds.Tables.Add("goods");
                ds.Tables["goods"].Columns.Add("name");
                ds.Tables["goods"].Columns.Add("count");
                Session["goods"] = ds;
            }
        }        protected void Button1_Click(object sender, EventArgs e)//显示购物车内容
        {
            DataSet ds = new DataSet();
            ds = (DataSet)Session["goods"];
            for (int i = 0; i < ds.Tables["goods"].Rows.Count; i++)
            {
                
                TableRow tr=new TableRow();
                TableCell tc1=new TableCell();
                TableCell tc2 = new TableCell();
                TextBox tx1 = new TextBox();
                TextBox tx2 = new TextBox();
                tx1.Text = ds.Tables["goods"].Rows[i]["name"].ToString();
                tx2.Text = ds.Tables["goods"].Rows[i]["count"].ToString();
                
                tc1.Controls.Add(tx1);
                tc2.Controls.Add(tx2);
                tr.Cells.Add(tc1);
                tr.Cells.Add(tc2);
                Table1.Rows.Add(tr);
            }
            
        }        protected void Button2_Click(object sender, EventArgs e)//添加商品
        {
            DataSet ds = new DataSet();
            ds.Tables.Add("goods");
            ds.Tables["goods"].Columns.Add("name");
            ds.Tables["goods"].Columns.Add("count");
            ds.Tables["goods"].Rows.Add(new object[] { Label1.Text, TextBox1.Text });
            ds.Tables["goods"].Rows.Add(new object[] { Label2.Text, TextBox2.Text });
            ds.Tables["goods"].Rows.Add(new object[] { Label3.Text, TextBox3.Text });
            Session["goods"] = ds;
        }        protected void Button3_Click(object sender, EventArgs e)//修改
        {
            DataSet ds = new DataSet();
            ds.Tables.Add("goods");
            ds.Tables["goods"].Columns.Add("name");
            ds.Tables["goods"].Columns.Add("count");
            for (int i = 0; i <this.Table1.Rows.Count; i++)
            {
                Response.Write(Table1.Rows[i].Cells.Count+"------------");//为0啊啊啊啊 啊啊 啊啊 ！！！
                TextBox tb1=(TextBox)this.Table1.Rows[i].Cells[0].Controls[0];//??????????????????????????
                 
                TextBox tb2=(TextBox)Table1.Rows[i].Cells[0].Controls[1];
                ds.Tables["goods"].Rows.Add(new object[] {tb1.Text , tb2.Text });
                
            }
            Session["goods"] = ds;
        }
    }
}