Hi,
Please check the 'Framework 2.0-Csharp-NoAjax\Simulate-File-Upload.aspx' in the AjaxUploader.zip
You must prepair the file data , if you want to pass a file to uploader, the file must on the server.
It's not possible to read the file data from user's PC if user do not select and upload the file.
Regards,
Terry