can any one tell me how to use captcha in asp.net mvc? is there any need to download any control for it?
2 Answers
If you don't fancy writing your own Captcha (who does!) you can use a Captcha library, such as this:
http://www.coderjournal.com/2008/03/aspnet-mvc-captcha/
With a Captcha library, you add the dll to your project and use the Captcha API to display and validate the Captcha image and input.
Display a Captcha:
<label for="captcha">Enter <%= Html.CaptchaImage(50, 180) %> Below</label><br />
<%= Html.TextBox("captcha") %>
And then make sure you add the Captcha attribute to your method:
[CaptchaValidation("captcha")]
Recaptcha is just one option when it comes to Captcha's (in fact, it's the option selected by Stack Overflow!)
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