HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearContent();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.Charset = "";
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.AddHeader("Content-Length", myData.Length.ToString());
HttpContext.Current.Response.AddHeader("Content-Disposition", String.Format("attachment; filename={0}", Path.GetFileName(file)));
HttpContext.Current.Response.BinaryWrite(myData);
//ArquivoPdfProcessado = myData;
HttpContext.Current.Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest();