First button click to start timer, second to stop

问题:

I'm struggling with making button first click to start a timer, second click to stop the timer and etc.

Can anybody help me? :)

private void button7_Click(object sender, EventArgs e)
{
    timer1.Start();
}

回答1:

Use the Enabled property:

if (timer1.Enabled) {
  timer1.Stop();
} else {
  timer1.Start();
}

The Enabled property tells you if the timer is running or not.

回答2:

One line of code:

timer1.Enabled = !timer1.Enabled;

回答3:

Assuming you're using the System.Timers.Timer class, simply use:

private void button8_click(object sender, EventArgs e)
{
    timer1.Stop();
}

See the MSDN page for more handy methods!!

回答4:

When you start a timer, its Enabled property is changed to True. And when you Stop it, it is set back to False. So you can use that to check the status of the timer.

if (timer1.Enabled)
{
   timer1.Stop();
}
else
{
   timer1.Start();
}

回答5:

you can use this !!!!

private void button8_click(object sender, EventArgs e)
{
   if (timer1.Enabled) {
       timer1.Stop();
   } else {
     timer1.Start();
   }
}