how to create logic of skip and next question in c#

Thankyou for reply,


Problem:

I used a datalist and create a pagination but some control such as Rating, Checkboxlist required validation problem and also can't fetch the question id because i want to  save data when click on next button and if skip than go to skip question, i have not idea how to work and what technique to use, if u have work or idea, please share.