Dynamically adding more controls to a page

Hi,
I am currently creating a web page (ASP.NET C#) which has a few fields on it (a couple of text boxes and drop down boxes). The user can fill these in but may then need to add information into more of these.
I would like to start with one 'row' of controls, with an 'add more' button that adds another 'row' of these controls to the page. The user would therefore be able to create lots of 'rows' by clicking the button again and again.
I would then need to be able to somehow store this information in my MSSQL database. 
Does anyone have an idea of how to do this? I have experimented by adding rows to gridview but this is not a very elegant solution. I think I could do this in PHP but I do not know how to do it in ASP.NET! Thanks for your help,
Mike 
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