How Saving Works

<au:AjaxFileUpload ID="Uploader1" runat="server"
    AutoPostBack="true"
    OnFileUploaded="Uploader1_FileUploaded" />

protected void Uploader1_FileUploaded(object sender,
    AjaxUploader.Events.FileUploadedEventArgs e)
{
    var savedName = Guid.NewGuid().ToString("N")
        + System.IO.Path.GetExtension(e.FileName ?? "");

    // CopyFile keeps the staged copy until the sweep; MoveFile removes it now.
    new AjaxUploader.Services.UploadService()
        .CopyFile(e.FileGuid, "~/uploads/" + savedName);
}