Question

I want to use a timer only once, at 1 second after the initialization of my main form.
I thought the following would have a message box saying “Hello World” just once, but actually a new message box says “Hello World” every one second.

Why so? I had put t.Stop() in the tick event.
Also, do I need to dispose the timer somehow to avoid memory leakage?

        Timer t = new Timer();
        t.Interval = 1000;                
        t.Tick += delegate(System.Object o, System.EventArgs e)
                        { MessageBox.Show("Hello World"); t.Stop(); };

        t.Start();   

Please help and show if there is a better way of doing this?
Thanks.

Answer 1

Replace MessageBox.Show("Hello World"); t.Stop(); with t.Stop();MessageBox.Show("Hello World");. Because you’re not pressing OK in time, the timer has already ticked again and you never reached the stop code.