Prevent user from downloading report

private void DisplayReportInBrowser()
        {
            // Variables
            Warning[] warnings;
            string[] streamIds;
            string mimeType = string.Empty;
            string encoding = string.Empty;
            string extension1 = string.Empty;

            // Setup the report viewer object and get the array of bytes
            byte[] bytes = ReportViewer1.LocalReport.Render("PDF", null, out mimeType, out encoding, out extension1, out streamIds, out warnings);
            Response.Clear();
            Response.ContentType = mimeType;
            Response.Cache.SetCacheability(HttpCacheability.Private);
            Response.Expires = -1;
            Response.Buffer = true;
            Response.AppendHeader("Content-Disposition", "inline; filename=Testing");
            Response.BinaryWrite(bytes);
            Response.End();
        }