Uploading multiple files when user clicks on [add more]
<p>I have a wizard, in some steps I want the user to be able to upload multiple files (no limit) each with description. by default one <code>FileUpload</code> control should be visible, and by clicking (add more) new once are created.</p>

<p>I need something like <a href="http://geekswithblogs.net/QuandaryPhase/archive/2009/10/02/asp.net-multiple-file-uploading.aspx" rel="nofollow">this</a> . 
when I tried to run this code alone, it is working just fine, but when I added it to my website it doesn't work ( the default <code>FileUpload</code> control is not created ) and the error occurs when I click (Upload)</p>

<p>I'm appreciating any help to fix the code, or any new ideas.
if my question is not clear enough or I need to give more information please let me know </p>
