求教如何显现动态添加的控件内容。

Generics 2010-09-15 02:01:14

我需要在页面上动态添加一些内容，网页由两个UpdatePanel, 一个是用来激发PostBack的，一个是用来更新页面的。以下是简单的代码：



<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>



<!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>Untitled Page</title>

</head>

<body>

    <form id="form1" runat="server">

    <asp:ScriptManager ID="ScriptManager1" runat="server">

    </asp:ScriptManager>    

    <div>

        <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">

        <ContentTemplate>

            <asp:Button ID="Button1" runat="server" Text="Button" />  

        </ContentTemplate>

        </asp:UpdatePanel>

        <asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Always">

        <ContentTemplate>

            <asp:Panel ID="TestPanel" runat="server"></asp:Panel>

        </ContentTemplate>

        </asp:UpdatePanel>

    </div>

    </form>

</body>

</html>

using System;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;



public partial class _Default : System.Web.UI.Page 

{

    protected void Page_Load(object sender, EventArgs e)

    {

        string dt = DateTime.Now.ToString();

        TextBox tb = new TextBox();

        tb.Text = dt;

        tb.Width = 150;

        this.TestPanel.Controls.Add(tb);

        this.UpdatePanel2.Update();



    }

}