How do I set the contents of a label and have it reset to string.empty after a period of 5 seconds in c# winforms?

Question

I've no real idea how to do this and I have tried messing with a timer but to no avail so far.

So what am I trying to do?

I have a label that is blank. When a certain event is triggered I want the label to say "Competition successfully setup" for a period of 5 seconds after which I want it to return to being blank.

Surely this can be done?? Can it? I have played around with a timer but I seem to be well off the mark.

Any help would be most welcome. My feeble attempt is below.

private void UpdateLabel(object sender, EventArgs e)
        {
            var timer = new Timer()
                {
                    Interval = 5000,
                };
            timer.Tick += (s, evt) =>
                  lblCompetitionSetupSuccess.Text = "Competition successfully setup";

            timer.Start();

            lblCompetitionSetupSuccess.Text = string.Empty;
        }

what you got when you run this code? – Sleiman Jneidi Feb 10 '13 at 21:12 — Sleiman Jneidi, Feb 10 '13 at 21:12

bas · Accepted Answer · 2013-02-10T21:19:09.090

5

Try the other way around:

    private void button1_Click(object sender, EventArgs e)
    {
        label1.Text = "I will vanish in 5 sec";

        var timer = new Timer();
        timer.Interval = 5000;
        timer.Tick += (o, args) => label1.Text = "";
        timer.Start();
    }

First set the label to whatever text you want it to display for 5 sec

        label1.Text = "I will vanish in 5 sec";

Then setup your timer so that on timer elapsed it will remove the text

        var timer = new Timer();
        timer.Interval = 5000;
        timer.Tick += (o, args) => label1.Text = "";
        timer.Start();

If you want the timer to stop after the first timer elapse:

        timer.Tick += (o, args) =>
            {
                label1.Text = "";
                timer.Enabled = false;
            };

edited Feb 10 '13 at 21:19

answered Feb 10 '13 at 21:10

bas

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Could the timer be stopped when the label is cleaned? Otherwise it will continue executing forever even if there's nothing going on, right? – Mateus Schneiders Feb 10 '13 at 21:14
Does it need to be enabled again when restarting? – Mateus Schneiders Feb 10 '13 at 21:20
won't "the next time" be when you call update label again? because then you instantiate a new timer and start from scratch again. so in that case, no – bas Feb 10 '13 at 21:21
That's very true. Thanks for the clarification. – Mateus Schneiders Feb 10 '13 at 21:22
Thanks for your help. I've got it now. – gallie Feb 10 '13 at 21:32
Rather than stop the timer, just set auto reset to false when you create it. – Immortal Blue Feb 10 '13 at 21:35
he's using `System.Windows.Forms`, not `System.Timers.Timer` (note the `Tick` property instead of the `Elapsed` property that `System.Timers.Timer` contains – bas Feb 10 '13 at 21:40

score 1 · Answer 2 · answered Feb 10 '13 at 21:09

1

Make sure you're using the System.Windows.Forms.Timer class, which calls the tick event on the UI thread.

answered Feb 10 '13 at 21:09

zmbq

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How do I set the contents of a label and have it reset to string.empty after a period of 5 seconds in c# winforms?

2 Answers2

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