Will somone point me to samples of how to implement CAPTCHA like security on my forms?

Hi, 

This should do it: http://davidhayden.com/blog/dave/archive/2006/02/27/2819.aspx

amensi:

Hi, 

This should do it: http://davidhayden.com/blog/dave/archive/2006/02/27/2819.aspx

 The learn more link points to a Page Not Found in CodeProject.com website.

Hi,

Following can also help...

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

I also use this one from time to time: http://www.mondor.org/captcha.aspx

amensi:

I also use this one from time to time: http://www.mondor.org/captcha.aspx

Okay, I checked that out and I am bit confused on this.

ccJoin.ValidateCaptcha(txtCap.Text);
if (!ccJoin.UserValidated)
{
  //Inform user that his input was wrong ...
  return;
}
 

Usually, where (which method) should I put this code in? Let's say I put in the submitButton_Click method, by using the word "reutrn;" this will stop any further execution of the code in that button_click method, correct?