我已经安装了captcha plugin并按照安装说明进行操作.验证码在页面上呈现完美,但在提交表单时,无论我输入什么,ModelState.IsValid始终为true.显然,如果验证码不能验证那么它对我来说并不好.

这是我的控制器：

        [HttpPost]
    [CaptchaValidation("CaptchaCode", "SampleCaptcha", "Incorrect CAPTCHA code!")]
    public ActionResult Register(AccountModel model)
    {
        if (!ModelState.IsValid)
        {
            // TODO: Captcha validation failed, show error message
        }
        else
        {
            // TODO: Captcha validation passed, proceed with protected action
        }

        return View();
    }

这是我的看法：

<link href="@BotDetect.Web.CaptchaUrls.Absolute.LayoutStyleSheetUrl" rel="stylesheet" type="text/css" />

<form class="form-horizointal" action="@Url.Action("Register", "Account")" method="POST">
    <div class="form-group">
        @Html.LabelFor(m => m.FirstName, new { @class = "col-sm-2 control-label" })
        @Html.TextBoxFor(m => m.FirstName, new { placeholder = "First Name"})
        @Html.LabelFor(m => m.LastName, new { @class = "control-label", placeholder = "Last Name" })
        @Html.TextBoxFor(m => m.LastName, new { placeholder = "Last Name" })
    </div>
    <div class="form-group">
        @Html.LabelFor(m => m.Email, new {@class = "col-sm-2 control-label", placeholder = "Email"})
        @Html.TextBoxFor(m => m.Email, new {placeholder = "Email"})
    </div>
    <div class="form-group">
        @{ MvcCaptcha sampleCaptcha = new MvcCaptcha("SampleCaptcha"); }
        @Html.Captcha(sampleCaptcha)
        @Html.TextBox("CaptchaCode")
    </div>
    <div class="form-group">
        captcha goes here
    </div>
    <div class="form-group">
        <input type="submit" class="btn btn-default" value="Register"/>
    </div>
</form>

有谁知道为什么这对我不起作用？谢谢你的帮助！

解决方法:

我不确定这是不是同样的问题.我在模态弹出窗口中有一个botdetect验证码.它工作正常,直到通过第一次验证确定,之后它总是如此,所以我添加了一个samplecaptcha.Reset(),当它无效时,Model.IsValid再次为假.

@{
    Layout = null;
    MvcCaptcha sampleCaptcha = new MvcCaptcha("SampleCaptcha");
    sampleCaptcha.Reset();
}

[等等]