How To Change Language In Runtime

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Threading;

using System.Globalization;

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

{

protected void Page_Load(object sender, EventArgs e)

{

string Form = "To day : {0} {1:C} {2:N} ";

Label1.Text = string.Format(Form, DateTime.Now.ToLongDateString(), 1000500, 123456);

}

protected override void InitializeCulture()

{

if (Request.Form["ListBox1"] != null)

{

String selectedLanguage = Request.Form["ListBox1"];

UICulture = selectedLanguage;

Culture = selectedLanguage;

Thread.CurrentThread.CurrentCulture =

CultureInfo.CreateSpecificCulture(selectedLanguage);

Thread.CurrentThread.CurrentUICulture = new

CultureInfo(selectedLanguage);

}

base.InitializeCulture();

}

}

N B:remove  number  from  tags

<1html>
<2body>
  <3form id="form1" runat="server">
  <4div>
      <5asp:listbox id="ListBox1" runat="server">
          <1asp:listitem value="en-US" selected="True">English
          <1asp:listitem value="es-MX">Español
          <1asp:listitem value="de-DE">Deutsch
    

      <1asp:button id="Button1" runat="server" text="Set Language" resourcekey="Button1">
    

      <1asp:label id="Label1" runat="server" text="" resourcekey="Label1">
      <6/div>
  <7/form>
<8/body>
<9/html>