arrays - Stopwatch changing button text in c# -

basically, i've got multiple button in form, , want show stopwatch in button.text when button pressed. (button modified toggle button.) , stop , reset timmer when button toggled off. simple enough seemed because have multiple buttons pressed in order, , don't know threading, seems more difficult presumed.

my origional intent have function runs every second , interates interager if button pressed using code:

public void jogger()//purpose step time[0] every second when button on.     {         while (true)         {             (int = 0; < 16; i++)             {                 if (btnstat[i])                     time[i]++;             }             thread.sleep(1000);         }     } 

problem is, don't know threading when call function, stuck doing , this.

either way, once called, call update function updates buttons including button.text displays time[0]; (array built around buttons)

is better way of doing doesn't cause cpu use and/or works?

thanks help! -john ivey

assuming using checkbox property button = appearence, in event handler checkedchanged:

private void checkboxcheckedchanged(object sender, eventargs e) {     checkbox checkbox = (checkbox) sender;      if (checkbox.checked)     {         timer timer = new timer {interval = 1000};         timer.tick += jogger;         timer.start();         timer.tag = new checkboxcounter {checkbox = checkbox, time = 0};         checkbox.tag = timer;     }     else     {         timer timer = checkbox.tag timer;         if (timer != null)         {             timer.tag = null;             timer.stop();             timer.dispose();             checkbox.tag = null;         }     } } 

change jogger function:

private void jogger(object a_sender, eventargs a_eventargs) {     timer timer = (timer) a_sender;     checkboxcounter data = (checkboxcounter)timer.tag;     data.time++;     data.checkbox.text = data.time.tostring(); } 

you need simple class store checkbox , current time:

class checkboxcounter {     public checkbox checkbox;      public int time; } 

then can add number of checkboxes , set event checkedchanged checkboxcheckedchanged.