After having uploaded files with AjaxUploader in a page, moving programatically to another page causes the Session_End() event (defined in global.asax ) to be fired, and as a consequence the collection System.Web.HttpContext.Session is emptied ...

If I use a standard FileUpload control rather that AjaxUploader, this does not happen.

Any idea concerning what can cause the session to be lost?

Thanks in advanced

Pierre-Henri