How to fire timer.Elapsed event immediately

Question

I\'m using the System.Timers.Timer class to create a timer with an Timer.Elapsed event. The thing is the Timer.Elapsed event is fired

Answer 1

For the first time, the timer will start after 1 second. After that, its interval will be changed to every 30 seconds or whatever...

    //main function    
    Timer timer = new Timer(1000);   //initial start after 1 second
        timer.Elapsed += new ElapsedEventHandler(TimerElapsedMethod);
        timer.Start();            
    }
    private void TimerElapsedMethod(object sender, ElapsedEventArgs e) 
    {
        Timer timer = (Timer)sender; // Get the timer that fired the event
        timer.Interval = 30000;      // Change the interval to whatever
        .
        .
        .
    }