table不能维持数据的问题
我写的下单页面PlaceOrder.aspx：
<%@ Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="PlaceOrder.aspx.cs" Inherits="PlaceOrder" %>
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<h2>下单页面：</h2>
产品列表：
<asp:GridView ID="GridView2" ......>
<asp:SqlDataSource .......>
已经选择的产品：<br />
<asp:Table ID="items" runat="server" EnableViewState="true">
</asp:Table>
<br />
<asp:Button ID="Button1" runat="server" Text="提交" />
<br />
</asp:Content>
后台代码：
public partial class PlaceOrder : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void GridView2_SelectedIndexChanged(object sender, EventArgs e)
{
string productInfoId = GridView2.SelectedRow.Cells[0].Text.Trim();
string productName = GridView2.SelectedRow.Cells[1].Text.Trim();
items.Rows.Add(getNewRow(productInfoId, productName));
}
private TableRow getNewRow(string productInfoId,string productName )
{
TableRow tr = new TableRow();
tr.BorderWidth = 1;
//1
TableCell tc = new TableCell();
tc.Visible = false;
tc.Text = productInfoId;
tr.Cells.Add(tc);
//2
tc = new TableCell();
tc.Width = 150;
tc.Text = productName;
tr.Cells.Add(tc);
//3
tc = new TableCell();
tc.Width = 70;
TextBox tb = new TextBox();
tb.Width = 30;
tc.Controls.Add(tb);
Label l = new Label();
l.Text = "个";
tc.Controls.Add(l);
tr.Cells.Add(tc);
return tr;
}
}
