在asp.net中的计时器观察

Question

On selection change of radio button, I want to show a clock/timer for 5 minutes and set a lock in DB.

Once 5 minutes are over, I have to remove the lock.

Also in case the browser window has been closed or redirected to other page, I should remove the lock.

Any pointers on how to achieve this functionality?

Are there any built-in clocks/timers ?

Thanks in Advance.

Answer 1

I would use jQuery to wire up the click() handler, and you can use the setTimeout() method to call a function after 5 minutes

setTimeout(function() { /* your ajax call here */ }, 5000); 

For more information on detecting when the browser closes, see this question:

javascript detect browser close tab/close browser

Answer 2

使用asp：timer控件代替。