Use reCaptcha in WPF App

I'm looking for solution how to integrate WPF desktop application with reCaptcha! Anyone knows the solution?

I'm w开发者_如何转开发orking on registration module to my application, and need good and simple captcha.

Thanks!

See https://developers.google.com/recaptcha/docs/display and https://developers.google.com/recaptcha/docs/verify.

You could make an request to http://www.google.com/recaptcha/api/challenge?k=your_public_key and parse the ChallengeValue. This value can be used to get the recaptcha image via http://www.google.com/recaptcha/api/image?c=challenge_value. Afaik URL Images can be displayed in WPF directly.

Let the user input into a TextBox (or similar) control.

For verification, use this input and make a request to http://www.google.com/recaptcha/api/verify (see documentation above).

Have you tried this - http://code.google.com/apis/recaptcha/docs/aspnet.html. It says it works in any .Net language, including C#. There is also this page although it is 2 years old.