public ActionResult GetGeneralVerificationCode(GeneralCodeFlags flags, int length = 4)
        {
            IImageVerificationCodeFactory factory = new ImageVerificationCodeProvider(
                new GeneralVerificationCode(flags, length)
                )
            {
                Width  = 89,
                Height = 32
            };

            return(File(factory.Draw(), "image/jpg"));
        }
 public GeneralVerificationCode(GeneralCodeFlags codeFlags, int length = 4)
 {
     CodeFlags = codeFlags;
     Length    = length;
 }