Sample of a simple Captcha in MVC

This sample of one simple captcha, do'nt generate only images, but images of one sum and the result is the 'password' to goes on. I can add other math operations, like division for example.You have to paste this example in the controller of your MVC 3 Project, after you need make

 
 
 
 
 
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1/10/2013
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