Mobile Control ASP.Net

<%@ Page 
    Inherits="System.Web.UI.MobileControls.MobilePage" 
    Language="VB" 
%>
<%@ Register 
    TagPrefix="mobile" 
    Namespace="System.Web.UI.MobileControls" 
    Assembly="System.Web.Mobile" 
%>

Sub OK_OnSubmit(Sender As Object, E As EventArgs)
    lbl1.Text = sl1.Selection.Value
    ActiveForm = Test2
End Sub


            runat="server"
        id="lblTitle"
        StyleReference="title" 
        Text="SelectionList Test Page"
    />
            runat="server" 
        id="sl1"
        SelectType="DropDown"
    >
        
        
    
            runat="server" 
        id="cmdOK"
        OnClick="OK_OnSubmit" 
        Text="OK" 
    />


            runat="server"
        id="lblTitle2"
        StyleReference="title" 
        Text="SelectionList Test Page"
    />
            runat="server" 
        id="lbl1"
    />