Question

I want to create a class that reads SMS messages from a GSM device.

I created a timer(system.threading) that reads for incoming message every second.

public void ReadMessage(){
//read sms messages
//and store it into the database
}

Sometimes ReadMessage() takes more than a second. How can I prevent the timer
from calling this procedure when the previous one is not yet finished?
1. Are AutoResetEvent and WaitOne good for this?
2. Is Threading.Timer a good choice? or should I do it on a single thread?

Answer 1

You should use a System.Timers.Timer, which is easier to work with.
(It’s a friendlier wrapper around Threading.Timer)

Set AutoReset to false, then Start() the timer again at the end of the handler.

Don’t use a dedicated thread; there’s no point in keeping a thread around doing nothing so that you can wake it up every second.