internet based client server .NET win app

Dear all,

1.
Currently, i have a database windows application and it's attached to a card reader device on client computer...
in intranet (TCP/IP network), it's easy to maintain this client server windows application..

2.
now, the SQL Server Database will be in headoffice (different city),
meanwhile the client application will be in different city too,
and we have to access the SQL Server through HTTP (internet connection)..
the client still has a reader device (+DLL) attached to it.

3.
Logically, we should use ASP .NET,
but it does not solve the device reader issue on client side.

In order to detect and communicate with reader (client side), we consider to use JavaScript and the reader's DLL, but it's not as easy as it appears..
i tried to find how to call this DLL, how to use this DLL's events, methods in JavaScript, but i can not find the sample code for this purpose.
..i already ask question in some forums , but no satisfied answers....

the DLL is a .NET Class Library. the windows application is in C# .NET 2003

4.
then i think of this design :

a. for client side in different city,
we still use windows application , so it's no problem with the reader device DLL stuff...

b. the only issue is how we can send and receive SQL data through
HTTP (internet connection) to SQL Server in headoffice (different city)...

Does anybody know how to do no. 4.b. above ?

Or perhaps better solution sample?

Thankyou,
hendy

Mar 30 '07 #1

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kenobewan

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Expert 4TB

Have you tried a web service?

Mar 30 '07 #2

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