Stopping timer in its callback method

Question

I have a System.Threading.Timer that calls its appropriate event handler (callback) every 10 ms. The method itself is not reentrant and can

Answer 1

I've had similar situation with a System.Timers.Timer, where the elapsed event is executed from a threadpool and needs to be reentrant.

I used this method to get around the issue:

private void tmr_Elapsed(object sender, EventArgs e)
{
    tmr.Enabled = false;
    // Do Stuff
    tmr.Enabled = true;
}

Depending on what you're doing you may want to consider a System.Timers.Timer, here's a nice summary from MSDN

                                         System.Windows.Forms    System.Timers         System.Threading  
Timer event runs on what thread?         UI thread               UI or worker thread   Worker thread
Instances are thread safe?               No                      Yes                   No
Familiar/intuitive object model?         Yes                     Yes                   No
Requires Windows Forms?                  Yes                     No                    No
Metronome-quality beat?                  No                      Yes*                  Yes*
Timer event supports state object?       No                      No                    Yes
Initial timer event can be scheduled?    No                      No                    Yes
Class supports inheritance?              Yes                     Yes                   No

* Depending on the availability of system resources (for example, worker threads)