adding controls to the page at runtime

adding controls to the page at runtime

the website that i work on consist of a page of questions and answers.
the specialist ask the client the Questions and store the answers at text
boxes and send them to the data base.
the number of the questions differ, so the admin must have the ability to
add more questions to the page and thus the text boxes for the answers be
must added automatically.
then when the specialist push the save button all the questions and
answers saved into a data base.
how can make such a thing and get the values to save them into my table ?