The reCAPTCHA ASP.NET Library provides a simple way to place a CAPTCHA on your ASP.NET website, helping you stop bots from abusing your website. The library wraps the reCAPTCHA API. You can use the library from any .NET language including C# and Visual Basic .NET.
reCAPTCHA Quickstart
These instructions should get you started quickly.
1.Download the reCAPTCHA Library.
2.Add a reference to library/bin/Release/Recaptcha.dll to your website.
3)If you haven't done so, sign up for an API key. Put the public and private key in the PublicKey and PrivateKey properties
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