public ActionResult Captcha() { string code = ValidateHelper.CreateValidateCode(5); _session.SetString("ValidateCode", code); byte[] bytes = ValidateHelper.CreateValidateGraphic(code); return(File(bytes, @"image/jpeg")); }
protected void Page_Load(object sender, EventArgs e) { string Code; var ms = ValidateHelper.CreateValidateGraphic(out Code, 6, 200, 50, 10); //将生成的图片发回客户端 //RequeryToModeltext页面中引用 Response.ClearContent(); //需要输出图象信息 要修改HTTP头 Response.ContentType = "image/Png"; Response.BinaryWrite(ms.ToArray()); }