Dear mani06ah,
The document and API can be found in
http://ajaxuploader.com/document/ . After file is uploaded, you can find it in temporary folder, you can use CopyTo() or MoveTo() to copy or move it to destination folder. You can also store the uploaded file to database, This example can be found in
http://ajaxuploader.com/Demo/Ajax-based-File-Forum.aspx . you can find this example's source code in \Ajax-Uploader\AdvancedCS20-MicrosoftAjax\Ajax-based-File-storage.aspx, it is based on sql server database, if you want to migrate it to MySQL, you need write your own code.
Regards,
Eric