Problem with Timers in C# - Please help

Hi all, I'm trying to create a set of timers (which will be dynamically sized) and store them in a SortedList identified with a number stored in a variable. All the timers will point to the same TimerElapsed handling code. Is there anyway to get the Elapsed code to recognise which timer elapsed or can someone suggest a better way to do it? Thanks in advance. // Called each time need to add a new timer. System.Timers.Timer ClientTimer = new System.Timers.Timer(); ClientTimer.Enabled = true; ClientTimer.Interval = 5000; ClientTimer.Elapsed += new System.Timers.ElapsedEventHandler(ClientTimerTimeout); mTimers.Add(mintClientID,ClientTimer); The Timer Elapsed hadling code is below. private void ClientTimerTimeout(object sender, System.Timers.ElapsedEventArgs e) { System.Windows.Forms.MessageBox.Show("Elapsed!", "Timer Event Raised!"); }