How to run a executable file from a web page?

Question

What I mean is, when user click a button on a webpage, a program which has already installed on his computer would be executed. I also need to pass some command line para

Answer 1

This is not possible. If it was, it would be a huge security breach.

Imagine being able to let the user click a button on the webpage and as a result format his harddrive with the standard format command? I bet you wouldn't want that happening to yourself.

Maybe you can think about exposing a webservice from your webapplication and let the desktopclient look at that webservice?