How to use a countdown timer for online exam in asp.net

Susanta Rout

11y10.8k.NET

how to use a countdown timer for online exam in asp.net server side

6 Replies

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Rajeesh Menoth11y ago
Accepted answer
Hi,

Aspx code:

Code behind code:

protected void Page_Load(object sender, EventArgs e)
{
if (Session["CountdownTimer"] == null)
{
Session["CountdownTimer"] = new CountDownTimer(TimeSpan.Parse("2:30:00"));
(Session["CountdownTimer"] as CountDownTimer).Start();
}
}
protected void Timer1_Tick(object sender, EventArgs e)
{
if (Session["CountdownTimer"] != null)
{
Label1.Text = (Session["CountdownTimer"] as CountDownTimer).TimeLeft.ToString();
}
}
public class CountDownTimer
{
public TimeSpan TimeLeft;
System.Threading.Thread thread;
public CountDownTimer(TimeSpan original)
{
this.TimeLeft = original;
}
public void Start()
{
// Start a background thread to count down time
thread = new System.Threading.Thread(() =>
{
while (true)
{
System.Threading.Thread.Sleep(1000);
TimeLeft = TimeLeft.Subtract(TimeSpan.Parse("00:00:01"));
}
});
thread.Start();
}
}
Ref : Click here
Susanta Rout9y ago
It is serverside calling or clientside calling?
Rahul Lakshakar9y ago
It's awesome.

But i am facing a problem, How to call submit btn click or another event function when left time equals to zero ?
In this timer is going in negative.

Please help i tried but i did not got it. I am new in this.

Thank you
Susanta Rout11y ago
its a correct one i got the answer
Susanta Rout11y ago
new CountDownTimer unable to get from V Studio editer
Susanta Rout11y ago
i am in content page now.plz check it out it is working in content page or not?