C# Image and label issue
<p>I have an issue when I'm trying to make my image or label visible in my web app. </p>

<pre><code>using System;
using System.Linq;
using System.Web.Security;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web.Services;
using System.IO;
using System.Web.UI.Adapters;


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

    }


protected void Timer1_Tick(object sender, EventArgs e)
    {
        if (File.Exists("c:/test.pdf"))
            //inform user
            Console.WriteLine("File uploaded.");
        Image1.visible = true; 
</code></pre>

<p>I'm getting an error as follows: </p>

<pre><code>The name 'Image1' does not exist in the current context
</code></pre>

<p>Any ideas here? Ive done this before without issue, but for some reason it doesn't like the <code>image1</code> (which i put on my webpage and made <code>visible = false</code>) nor the label which is also <code>visible = false</code>. </p>
