public override void ExecuteResult(ControllerContext context)
        {
            Captcha c = new Captcha();
            c.Text = _captchaText;
            c.Width = 80;
            c.Height = 35;
            c.FamilyName = "Georgia";

            HttpContextBase cb = context.HttpContext;

            cb.Response.Clear();
            cb.Response.ContentType = "image/jpeg";
            c.Image.Save(cb.Response.OutputStream, ImageFormat.Jpeg);
            c.Dispose();
        }
        public override void ExecuteResult(ControllerContext context)
        {
            Captcha c = new Captcha();

            c.Text       = _captchaText;
            c.Width      = 80;
            c.Height     = 35;
            c.FamilyName = "Georgia";

            HttpContextBase cb = context.HttpContext;

            cb.Response.Clear();
            cb.Response.ContentType = "image/jpeg";
            c.Image.Save(cb.Response.OutputStream, ImageFormat.Jpeg);
            c.Dispose();
        }