online exam application in asp.net

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ASP.NET

Hi. I want to create an online exam. I have my questions, the multiple choice options, and the correct answer saved in a table in the database. I want to dynamically populate a web form with all the questions and answer choices in a radio button list. I want all the questions to be on one web page. When the user clicks submit I want to check all the answers chosen and compare it with the correct answers from the database, and then give the user his score. I searched a lot online but I'm having a hard time figuring out how to figure out the score. Any help would be greatly appreciated.
Thank you.