user control doesn't responde to button click

i have this user control. i want to add it to my default page.

 <%@ Control Language="VB" AutoEventWireup="false" CodeFile="login.ascx.vb" Inherits="controls_login" %>
<style type="text/css">
.style1 { COLOR: #ffffff }
</style>
<table>
    <TR>
        <TD bgcolor="#ff6600"><span class="style1">Login</span></TD>
    </TR>
    <tr>
        <td>User ID:</td>
    </tr>
    <tr>
        <td><input type="text" size="12" runat="server" id="txtUserName" name="Text1"></td>
        
 &n ...