Question

I have a simple timer in .net 4.0, the interval is set to 1000 (= 1 second) and enabled = true. To start the timer I use .Start(). Everything works fine so far.

Then in the event of the timer I got this :

private void MyTimerEvent()
{
    myTimer.Stop();
    myTimer.Start();

    //Some other work is done not related to the timer
}

The problem is that as soon as the timer event have been runned once it will stop throwing the event and its seems like it is set to enabled = false even after the myTimer.Start(); sometimes. But I am not setting the enabled = false at all?

What am I doing wrong?

Edit : System.Windows.Forms.Timer is the one I use.

Answer 1

If you call Stop on a Forms.Timer it simply does an Enabled=False. Same with Start. If your Timer is enabled there is no need to call Start because the timer is running already.
You can check yourself with Reflector et al:

[TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]
    public void Start()
    {
        this.Enabled = true;
    }

    [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]
    public void Stop()
    {
        this.Enabled = false;
    }