How to make reCAPTCHA work with a ValidationGroup in ASP.Net (captcha)

asp.net captcha recaptcha
Jason Kanaris picture Jason Kanaris · Oct 23, 2008 · Viewed 12.4k times · Source

I am using the ASP.Net plugin and control provided by reCAPTCHA. I can successfully get the control to work if the submit button on the web form is not in a validationgroup. There is no validationgroup attribute for the reCAPTCHA control.

Has anybody had any success with this or any solutions to get the reCAPTCHA control to work when there is a validationgroup on the web form?

Answer

James Law picture James Law · Sep 5, 2012

Thought I'd just expand on the comments by a few others with some working code...

<recaptcha:RecaptchaControl ID="RecaptchaControl" runat="server" />

<asp:CustomValidator ID="RecaptchaValidator" runat="server" OnServerValidate="RecaptchaValidator_ServerValidate" ErrorMessage="Recaptcha input invalid." ValidationGroup="SomeValidationGroup" />

And code behind...

protected void RecaptchaValidator_ServerValidate(object sender, ServerValidateEventArgs e)
{
    this.RecaptchaControl.Validate();
    e.IsValid = this.RecaptchaControl.IsValid;
}

Can anyone think of a simpler way of doing it? Kudos to Vidalik for the thoughts about using OnServerValidate.

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