how to use timer which alert on every 2 minute on a button

Question

I am label which display the current time ( label8.Text = DateTime.Now.ToString("HH:mm:ss"); ) but here i want on a button click the timer would alert on two minute (i.e time out)..

Vulpes · Answer

Sorry, I've forgotten to escape the colon. It should be: label8.Text = ts.ToString("mm \ :ss");

Ajay Kadian · Answer

Its shows error

Vulpes · Answer

I wouldn't use a lambda expression for this as we may need to alter the 'captured' variable, startTime. The following is off the top of my head and therefore untested: private Timer timer; private DateTime startTime; private Form1_Load(object sender, EventArgs e) { timer = new Timer{Interval = 1000, Enabled = false}; timer.Tick += timer_Tick; } private button1_Click(object sender, EventArgs e) { startTime = DateTime.Now; if(!timer.Enabled) timer.Enabled = true; } private private void timer_Tick(object sender, EventArgs e) { TimeSpan ts = (TimeSpan.FromMinutes(2) - (DateTime.Now - startTime); if(ts.TotalSeconds >= 0) { label8.Text = ts.ToString("mm:ss"); } else { label8.Text = "00:00"; timer.Enabled = false; Console.Beep(); } }

Ajay Kadian · Answer

I write this code but after 2 minute i want to stop the timer and in between 2 minutes if i again click the same button it start from starting ... var startTime = DateTime.Now; var timer = new Timer() { Interval = 1000 }; timer.Tick += (obj, args) => label8.Text = (TimeSpan.FromMinutes(2) - (DateTime.Now - startTime)) .ToString("hh\:mm\:ss"); Console.Beep(); timer.Enabled = true;

Vulpes · Answer

Not sure exactly what you mean by an alert but you could update the time display and/or sound a beep in two minutes time by adding a timer to your form and setting its interval property to: 2 * 60 * 1000 = 120000 milliseconds The code to be added to the Tick eventhandler would be: private void timer1_Tick(object sender, EventArgs e) { label8.Text = DateTime.Now.ToString("HH:mm:ss"); timer1.Enabled = false; // if only one alert needed Console.Beep(); } If you're wanting to do a timeout, perhaps a countdown would be more suitable?

how to use timer which alert on every 2 minute on a button

Answers (5)