I am trying to attach files to a list item through a sandboxed visual web part programatically. Tried the following options
SharePoint Attachments control: Not available for sandboxed solution
File Upload Control to attach a file. File Upload control does not work in sandboxed web part
Attaching files through ECMASCRIPT for a list item. ECMASCRIPT cannot attach files. It only reads\add\delete\update site data. File operations are not available in ECMASCRIPT
Please help me? I am in need of this immediately...