Captcha image is not showing

Question

Hello;

          I am using captcha in my website from below link: 

 

http://www.msdotnet.co.in/2012/08/how-to-add-captcha-image-in-aspnet.html#.VmARQNIrLIU

 

It works fine when my website is running without IIS. But when I am saving my website inside 'WWWROOT' folder and run with IIS Server, The Captcha image is not showing. Please help me.

                         Thanks in advance..