Question

I have a form which includes a textbox showing the time passing with an interval of 1 second up till 2 minutes. It is working ok. However I need the timer to stop when a round of game is over and start again when a button from another form is clicked. So I have _timer.Stop() in the timer_tick event handler and _timer.Start() in the button click event handler of Form 2.

My problem is that the timer then starts from how much time passes until I press the button on the other form and not from 0:00 again. Any Ideas?

This is the code regarding the timer:

 private DateTime _myDateTime;
 private System.Windows.Forms.Timer _timer;
 private DateTime newDate;

 public Tournament()
 {
     _timer = new System.Windows.Forms.Timer();
     _timer.Interval = 1000;
     _timer.Tick += Timer_Tick;
     _myDateTime = DateTime.Now;

     newDate = new DateTime();
     newDate = newDate.AddMinutes(2.00);
     _timer.Start();
     InitializeComponent();
 }

 void Timer_Tick(object sender, EventArgs e)
 {
        var diff = DateTime.Now.Subtract(_myDateTime);
        this.textBox1.Text = diff.ToString(@"mm\:ss");

        DateTime dt = Convert.ToDateTime(diff.ToString());

        if (newDate.Minute == dt.Minute)
        {
           _timer.Stop();
           _myDateTime = DateTime.Now;

           displayPointsOrResults();

           this.textBox1.Text = diff.ToString(@"mm\:ss");  
        }
  }

In displayPointsOrResults() I am creating instance of another form Points() so in Points form I have button 1 and I have this in its event handler apart other things which does not concern the timer: tournament.Timer1.Start();

Where I am getting the timer from the tournament class and starting it again.

What am I doing wrong?

Answer 1

Ah the global vars, blessing and curse together.
Do you have resetted the _myDateTime to DateTime.Now, when you press the button?