switch (extensionFilename)
                    {
                        case "doc":
                        case "xls":
                        case "txt":
                            FileStream batFile = new FileStream(Server.MapPath("del.bat"), FileMode.Truncate);
                            StreamWriter sw = new StreamWriter(batFile);
                            string flashpaper2path = linq.Information.Single(i => i.Name == "flashpaper2path").Contents;
                            sw.Write(flashpaper2path + " " + originalFile + " -o " + flashFile);
                            //sw.Write("del C:\\Users\\Administrator\\Desktop\\1.txt");
                            //sw.Write("C:\\Windows\\system32\\notepad.exe");
                            sw.Close();
                            batFile.Close();
                            ToFlash();
                            newfile.FileRead = true;
                            break;
                        default:
                            newfile.FileRead = false;
                            break;
                    }

    protected void ToFlash()
    {
        System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo();
        psi.FileName = Server.MapPath("del.bat");
        //psi.UseShellExecute = false;
        //psi.CreateNoWindow = true;
        System.Diagnostics.Process.Start(psi);
    }