Open Windows Form from Windows Service..

One possible solution is this:
1. Write a regular Windows desktop application and install it to star up on login.
2. Write any kind of inter-process communication between this application and Windows service - WCF, remoting, socket, plain file, whatever.
3. When application loads, popup the window, fetch data from the user and send them to the service.

ya....actually my application scenario is that when ever a user log-in, a windows form will pop-up stating to enter the details like username & password of my some other application.

so in that case i want the user to see a windows form.

If any other solution, you have please do tell me with some illustrated code.

Regards
ABHISHEK SAXENA

Windows services execute on a different desktop from the one visible by currently logged on user. Popups are shown on that desktop rather than user desktop, and that is not advisable - there's typically nobody to see the popup.

What exactly is the problem you're solving? From my previous experience popping up the window from inside the service is not the right way to do anything.