Notifier for every user

How can I handle this ....
I have a operation in my win app and I want everybody using that app in that moment to be notified if I did a change ..


Any ideas

depends on how things are setup...

is this app
1) using in a corporate environment and accessed from a share
2) installed on individual PCs
3) have any sort of connection to a central server

Option number 2

installed on individual PCs

Do you also have a centralized server? One computer is going to be the server node to keep track of who's currently in the app. Otherwise, you're going to have a HUGE mess trying to determine which other clients are currently up.

Yes. in advanced a centrilzed server

so any help with that??

Well... How good are you with sockets and multithreading?

Do you have any specific code you need help with?

This is quite a large task. I'm currently working on an application that monitors a remote XML file for alarms and notifies subscribed clients if one goes off (via a windows service). It works, but the layout is really jumbled. I need to make the code more reusable and abstract. Afterwards, I was planning on posting the architecture here. It will be able to help, but if you have a specific questions in the mean time... That's going to be alot easier to assist with than a generalized idea.