Build web service application

[menag]

Dears,
I need to build a Client server application.
The server gets Data Feed of currencies, make some process and store it in memory

The client have to connect the server and get process DATA from him
If I try to connect the client with the server via web service then the client creates new session each time send request to the server.

What is the best way to do it?

Where can I read more about it?

 

[JohnH]

Here is one of very many VB.Net web service tutorials: http://abstractvb.com/code.asp?A=1004

A webservice is a web application just like ASP.Net webpages, it will only do work when asked to, if you need to keep same work for later request you must store it (to file/database).