How to compile c# code which is placed in textarea in ASP.Net

Hello Everyone,    I am having one doubt in my application. I am using textarea control in my aspx page. in that control i am having c# program. My requirement is i need to compile that entire code if button was clicked & if any errors are occurred need to show them in another textbox/lable. actually i tried for console application its working fine now i need it in web application.. here is the code i used for console application... ddi