ASP.NET, what control do I need to achieve this navigation function, thank you

ASP.NET, what control do I need to achieve this navigation function, thank
you

here is what I want to achieve. I am creating a shopping website, and I
have a DataList to show all my products in the content page.
In the administrator page of my website, When I create a new category,
'Nike' and a few pairs of shoes under this 'Nike'. Then I create another
category, 'New Balance' and a few pairs of shorts under this 'New
Balance'. After that I click save then it is saved to my Access database.
Then, I go to my website, I hope the side menu bar which is in the master
page will show 'Nike' and 'New Balance', when I click Nike, those shoes
will be displayed in my DataList, when I click 'New Balance', those shorts
will be displayed in the DataList.
So, what control should I use to achieve this function, to connect the
sidebar with my DataList, please give me some advice or help.
I am new to ASP.NET, still not familiar with it. If I Google it, I dont
even know what I should search.
Thanks a lot