C# (CSharp) CaptchaImage.RandomString示例

示例#1

        public IActionResult GetCaptchaImage()
        {
            var code = CaptchaImage.RandomString(4);
            var x    = new CaptchaImage(code, 250, 100);

            HttpContext.Session.SetString("LoginCaptcha", code);
            var y = ImageToByte2(x.Image);

            return(File(y, "image/png"));
        }

示例#2

文件： AccountController.cs 项目： PhilipKozlov/KnowledgeTestingSystem

        public ActionResult Captcha()
        {
            Session["Captcha"] = CaptchaImage.RandomString(8);
            var ci = new CaptchaImage(Session["Captcha"].ToString(), 200, 50, "Helvetica");

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