Button not changing the Label on Clicking
<p>I have this Default.aspx.cs</p>

<pre><code>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Xml;
using System.IO;


public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        Calendar1.SelectedDate = DateTime.Today;
        info.Visible = false;
        meeting.Visible = true;
        member.Visible = true;
        label.Visible = true;
    }

    protected void Button3_Click(object sender, EventArgs e)
    {
        DateTime Now = DateTime.Today;
        DateTime wed1 = getFirstWednesdayOfMonth(Now);
        DateTime wed3 = getThirdWednesdayOfMonth(Now);

        if (Now &lt; wed1)
        {
            Label5.Text = "The next meeting is on" + "\n" + wed1.ToShortDateString() + "\nat 7 pm in room S242";
        }
        else if (Now &lt; wed3)
        {
            Label5.Text = "The next meeting is on" + "\n" + wed3.ToShortDateString() + "\nat 7 pm in room S242";
        }
    }

    protected DateTime getFirstWednesdayOfMonth(DateTime seedDate)
    {
        DateTime wed1 = new DateTime(seedDate.Year, seedDate.Month, 1);
        while (wed1.DayOfWeek != DayOfWeek.Wednesday)
        {
            wed1 = wed1.AddDays(1);
        }
        return wed1;
    }
    protected DateTime getThirdWednesdayOfMonth(DateTime seedDate)
    {
        DateTime wed3 = new DateTime(seedDate.Year, seedDate.Month, 15);
        while (wed3.DayOfWeek != DayOfWeek.Wednesday)
        {
            wed3 = wed3.AddDays(1);
        }
        return wed3;
    }

    protected void btnInfo_Click(object sender, EventArgs e)
    {
        btnInfo.Visible = false;
        info.Visible = true;

    }

    protected void Button2_Click(object sender, EventArgs e)
    {
        if (IsPostBack)
        {
            if (validateFirst.IsValid &amp;&amp; validateLast.IsValid &amp;&amp; validatePhone.IsValid &amp;&amp; validateEmail.IsValid)
            {
                lblThanks.Text = "Thanks! you will contacted in 2 business days!";
                info.Visible = false;
            }
        }
    }
    protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (ListBox1.SelectedValue == "analyst")
        {


        }
    }
}
</code></pre>

<p><strong>and Default.aspx</strong></p>

<pre><code>&lt;%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %&gt;

&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
&lt;head id="Head1" runat="server"&gt;
    &lt;title&gt;&lt;/title&gt;
    &lt;style type="text/css"&gt;
        .heading
        {
            text-align: center;
            border-style: double;
            background-color:#F2A988;
            font-family:Sans-Serif;
            font-weight:bold;

        }
        #wrapper {
            margin: 0 auto;
            width: 400px; 
            text-align:left;
        }
        .style1
        {
            text-align: center;
            font-family:Sans-Serif;
        }
        .style2
        {
            font-family: Arial, Helvetica, sans-serif;
        }
    &lt;/style&gt;
&lt;/head&gt;
&lt;body style="height: 642px; width: 911px; " id="wrapper"&gt;
    &lt;form id="form1" runat="server"&gt;

    &lt;div class="heading"&gt;
        ABC Computer Club - Inquiry Form&lt;/div&gt;
        &lt;br /&gt;

    &lt;asp:Calendar ID="Calendar1" runat="server" Font-Names="Arial"&gt;&lt;/asp:Calendar&gt;



        &lt;br /&gt;
    &lt;asp:Label ID="lblThanks" runat="server" 
        style="font-family: Arial, Helvetica, sans-serif; font-weight: 700"&gt;&lt;/asp:Label&gt;
    &lt;br /&gt;



        &lt;br /&gt;

    &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
    &lt;asp:Button ID="btnInfo" runat="server" Font-Names="Arial" 
         style="font-weight: 700" 
        Text="I'd like to receive more information!" Width="261px" 
        onclick="btnInfo_Click" /&gt;

    &lt;div runat="server" id="info" 
        style="position:relative; top: -1px; left: 7px; width: 463px; height: 415px;"&gt;
        &lt;span class="style2"&gt;If you would like to join the club or receive more 
        information about the club, fill in the form below and click the submit button.&lt;/span&gt;&lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:Label ID="Label1" runat="server" 
            style="font-weight: 700; font-family: Arial, Helvetica, sans-serif" 
            Text="First Name:"&gt;&lt;/asp:Label&gt;
&amp;nbsp;&lt;asp:TextBox ID="txtFName" runat="server"&gt;&lt;/asp:TextBox&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:Label ID="Label2" runat="server" 
            style="font-weight: 700; font-family: Arial, Helvetica, sans-serif" 
            Text="Last Name:"&gt;&lt;/asp:Label&gt;
&amp;nbsp;&lt;asp:TextBox ID="txtLName" runat="server"&gt;&lt;/asp:TextBox&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:Label ID="Label3" runat="server" 
            style="font-weight: 700; font-family: Arial, Helvetica, sans-serif" 
            Text="Phone #:"&gt;&lt;/asp:Label&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
        &lt;asp:TextBox ID="txtPhone" runat="server"&gt;&lt;/asp:TextBox&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:Label ID="Label4" runat="server" 
            style="font-weight: 700; font-family: Arial, Helvetica, sans-serif" 
            Text="Email:"&gt;&lt;/asp:Label&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
        &lt;asp:TextBox ID="txtEmail" runat="server"&gt;&lt;/asp:TextBox&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="Submit" /&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:RequiredFieldValidator ID="validateFirst" runat="server" 
            ControlToValidate="txtFName" ErrorMessage="First Name is Required" 
            style="font-family: Arial, Helvetica, sans-serif"&gt;&lt;/asp:RequiredFieldValidator&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:RequiredFieldValidator ID="validateLast" runat="server" 
            ControlToValidate="txtLName" ErrorMessage="Last Name is Required" 
            style="font-family: Arial, Helvetica, sans-serif"&gt;&lt;/asp:RequiredFieldValidator&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:RegularExpressionValidator ID="validatePhone" runat="server" 
            ControlToValidate="txtPhone" ErrorMessage="Phone Number is invalid" 
            style="font-family: Arial, Helvetica, sans-serif" 
            ValidationExpression="^[01]?[- .]?(\([2-9]\d{2}\)|[2-9]\d{2})[- .]?\d{3}[- .]?\d{4}$"&gt;&lt;/asp:RegularExpressionValidator&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;asp:RegularExpressionValidator ID="validateEmail" runat="server" 
            ControlToValidate="txtEmail" ErrorMessage="Invalid Email" 
            style="font-family: Arial, Helvetica, sans-serif" 
            ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"&gt;&lt;/asp:RegularExpressionValidator&gt;
    &lt;/div&gt;

    &lt;div runat="server" id="meeting" 
        style="position:absolute; top: 150px; left: 580px; width: 232px; height: 64px; text-align: center; margin-top: 0px; font-family: Arial; font-weight:bold;"&gt;
        &lt;br /&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
        &lt;asp:Label ID="Label5" runat="server" Text="Test"&gt;&lt;/asp:Label&gt;
        &lt;br /&gt;
        &lt;/div&gt;



    &lt;div runat="server" id="label" style="width: 308px; position:absolute; top: 45px; left: 550px; margin-top: 0px;" 
        class="style1"&gt;
        Click Below to find out when
        &lt;br /&gt;
        the club meets next&lt;/div&gt;

    &lt;div runat="server" id="member" 



        style="position:absolute; top: 28px; left:880px; width: 274px; height: 441px; font-family:Sans-Serif;"&gt;
        &lt;b&gt;View Members by Program:&lt;br /&gt;
        &lt;asp:ListBox ID="ListBox1" runat="server" Height="175px" Width="213px" 
            onselectedindexchanged="ListBox1_SelectedIndexChanged"&gt;
            &lt;asp:ListItem Value="all"&gt;All&lt;/asp:ListItem&gt;
            &lt;asp:ListItem Value="programmer"&gt;Computer Programmer&lt;/asp:ListItem&gt;
            &lt;asp:ListItem Value="itss"&gt;Information Technologies Support Services&lt;/asp:ListItem&gt;
            &lt;asp:ListItem Value="analyst"&gt;Systems Analyst&lt;/asp:ListItem&gt;
        &lt;/asp:ListBox&gt;
        &lt;br /&gt;
        &lt;br /&gt;
        &lt;/b&gt;&lt;/div&gt;

    &lt;div style="position:absolute; top: 99px; left: 600px; width: 192px; text-align: center; margin-top: 0px;"&gt;
        &lt;asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
            Text="Next Meeting" /&gt;
    &lt;/div&gt;

    &lt;/form&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>The problem is whenever I click <strong>"Next Meeting"</strong> nothing happens whereas <em>it should set the label text to Next Available first or third wednesday of the month</em>. It did worked before but since when I copied the whole code to a new website it is not working. What may be the problem? </p>
