Upload Data from Local Database to Live Database in ASP.Net using SQL 2008 -

i working on web application have 2 parts.

1) 1 online web site @ online server.

2) second running on local machines/computers.

the structure of database same on both live , on local. user can make changes on local database , publish them on live server.

how can update data local database online database? best technique this?

use of version controller tool tfs, in check in changes