Application for auto update sql server database from local database when net is avialable

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SQL-Server-2005

C#

ASP.NET

, +

Hi Friend,

I want to develop an application for auto update sql data from local server to web hosted server when internet connection is available.
Actually problem is i develop a website for MLM but we use application for all accounting and management works in online and offline also now i want to make an application that help me update automatic database with new changes. when i connect internet in application.

I am waiting for your positive reply.
Thanks,

Vivek