How to create foorplan in asp.net?

Question

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.