如何在自定义验证后重新加载ReCaptcha控件？

Question

我的注册表格上有ReCaptcha控件：

<recaptcha:RecaptchaControl ID="ReCaptcha" runat="server" PublicKey="<%$ appSettings:ReCaptchaPublicKey %>" PrivateKey="<%$ appSettings:ReCaptchaPrivateKey %>" Theme="white" />
<asp:CustomValidator ID="ReCaptchaCustomValidator" runat="server" ErrorMessage="ReCaptcha error message." Display="None" ValidationGroup="Step1" EnableClientScript="true" OnServerValidate="ReCaptcha_ServerValidate" />
<asp:ValidationSummary ID="ValidationSummary1" runat="server" DisplayMode="List" ValidationGroup="Step1" CssClass="validationSummary" />

代码隐藏

protected void ReCaptcha_ServerValidate(object source, ServerValidateEventArgs e)
    {
        ReCaptcha.Validate();

        if (ReCaptcha.IsValid)
            e.IsValid = true;

        else
            e.IsValid = false;
    }

如果用户输入的ReCaptcha值不正确，则在服务器端验证后，ReCaptcha控件将消失。

验证后如何重新加载？

Answer 1

protected void Page_PreRender（object sender，EventArgs e）

{

CaptchaControl1.Enabled = true;

}