Has anyone ever used reCaptcha?

.NET
1

Hey everyone,

I have tried enabling reCaptcha to work on a website, it does appear BUT when the submit button is clicked and nothing is entered in reCaptcha the form is still submitted which shouldn’t happen.

This is the URL:-

http://kidsunlimi2.eweb102.discountasp.net/enquire-form.aspx

If you look at the bottom i need it to link with the form so if nothing is entered then it doesn’t submit?

On form submit i simply send an email.

Can anyone please help?

Thanks in advance.

2

I have. I used this tutorial. It is very is to follow. And you create your class once and can use it on every site in the future:

http://www.codeproject.com/KB/aspnet/CaptchaImage.aspx

3

Are you using the ASP.NET plugin? If not, use it. I had it up and running within an hour.

Cheers,
D.

4

Hey,

I am using the ASP.NET plugin. This is what i have done so far…

Downloaded the library from http://code.google.com/p/recaptcha/downloads/list?q=label:aspnetlib-Latest

Then i followed this http://recaptcha.net/plugins/aspnet/

Only thing i don’t understand is how to link the code to the form? I’m programming in C# and i have the following code:


    protected void Button1_Click(object sender, EventArgs e)
    {
        string time;

        time = "Evening";

        MailMessage message = new MailMessage("enquiries@kidsunlimited.co.uk", "ABC.DEF@kidsunlimited.co.uk");
        message.Subject = "Enquiry form request";
        message.Body = "Please call " + DropDownList1.SelectedValue + " " +
            txt_name.Text + ", in the " +
            time + " available on " + txt_tel.Text
            + " or " + txt_email.Text +
            ". Enquiring about " + DropDownList3.SelectedValue +
            ", regarding the following nursery " +
            DropDownList2.SelectedValue + ". Address is " + txt_address.Text +
            ", " + txt_postcode.Text + ". Any specific enquiry: " + txt_specific.Text + ".";
        SmtpClient client = new SmtpClient("**********");
        client.Send(message);
        Response.Redirect("thanks.aspx");
    }

And in the front end i have this to make the reCaptcha display:


<recaptcha:RecaptchaControl
  ID="recaptcha"
  runat="server"
  PublicKey="6Lc-oQsAAAAAAOcQbs16sTt7OKAEGEdq0WOU8ghi"            
  PrivateKey="6Lc-oQsAAAAAABE5Mfa_AmND-4iwNh-QVLDtvQk_"
  />

So how can i prevent the form from being submitted if the recaptcha is not filled in?

Am i missing anything out? Or would i need to make a class as stated in #2?

5

Or better still do i need to add code to trigger the reCaptcha box so it knows that nothing has been entered?? If i used the class shown in #2, will it work with the reCaptcha box i have now?

Thanks again

6

Hey i fixed it,

I was simply missing If(Page.IsValid)… :lol:

Thanks guys

7

I’d probably edit the above post and remove your public/private key values (unless you used made-up values). I don’t know that any real harm can come of it, but it’s probably not a good idea nonetheless.

Cheers,
D.

8

Call me OCD, but it’s not hard to make your own captcha, with classes already in the .NET Framework (ie Random). Then again, if you don’t have OCD I guess you shouldn’t invent fire again. Just thought it would be cool.

9

reCaptcha has the side benefit of helping to digitise books.

Cheers,
D.