Using ReCaptcha with MVC3 and razor?

How exactly do you get ReCaptcha work in MVC3 with razor? I tried "Install-Package microsoft-web-helpers" but still could not get it to work on my .cshtml razor page, it cannot find the type ReCaptcha. And, on ht开发者_如何学编程tp://nuget.org/List/Packages/microsoft-web-helpers someone left comment saying "This package currently works with WebMatrix only". While this article shows it may work http://www.dotnetcurry.com/ShowArticle.aspx?ID=611

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You might need to make the Microsoft.Web.Helpers namespace available to the views. In your Web.config (the one in your Views folder) add:

<namespaces>
    <!-- other namespaces here -->
    <add namespace="Microsoft.Web.Helpers"/>
</namespaces>

Then you can use the following helper in your view:

@ReCaptcha.Validate([public key])

If the namespaces setting doesn't work, you could try to add @using Microsoft.Web.Helpers statement on top of the view to see if that helps. If it does, you'll have to try and find out why the namespace setting in the web.config isn't working...

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See this http://eglasius.blogspot.com/2010/10/adding-recaptcha-to-aspnet-mvc.html

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Might be too late to the party but I could not get any of the examples out there to work with MVC3. Microsoft's helpers does not appear to work either.

Finally downloaded the reCaptcha binary from google code for .net - http://code.google.com/p/recaptcha/downloads/list and created a custom razor Html helper.

Code is available on Github - https://github.com/clearinterface/MvcRecaptcha

Hope this helps.

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The answers above are not 100% complete so I wrote a tutorial that covers every single step.