title: Calling a public method on windows service
body: <p>I have a timer in a windows service (.NET C#).  I need to be able to change the elapsed value from an external program.  If the timer is currently running, I need to be able to shorten the time elapsed value from an external program.   I was thinking of having a public method in the service that would change the timer elapsed value and restart the timer, but can an external program call a public method on a windows service?  </p>