How to create foorplan in asp.net?

Hi Sir/madam,

Our Company is based on event management.We organise 4-5 events yearly.
There are more than 100 companies participated per event.

Our Exhibition Hall structure is fixed.There are 150 rectanguler stands in exhibition hall.and each stand contains uniq stand number.

I have to maintain details of each stand using iteractive floor plan system for http://nridubai.com admin.when user click any stand then that stand enlarge in edit mode for details(like company name,price etc,booked or not).user need to view/edit the data.

This application is in analysis phase.
I am very confused from where and how to start.

which control is best to represent uniq stand area ?

please help me on this web application.

Thanks in advance.