how to insert countdown timer in asp.net c#
hii I want to insert a countdown timer in my project. right now i am using the following code:
{
DateTime dt = (DateTime)Session["end_t"];
DateTime dt_curr = DateTime.Now;
TimeSpan ts = dt - dt_curr;
lblTimer.Text = ts.Hours.ToString() + ":" + ts.Minutes.ToString() + ":" + ts.Seconds.ToString();
if (ts.Minutes == 0)
{
Timer1.Enabled = false;
Response.Redirect("~/Online Exam/result2.aspx");
}
the code works fine but when w开发者_运维百科e move to some other page and then return back to main page the timer gets restarted. How can i overcome with this? Please help
It looks like you're resetting the end time on each page load, probably by doing something like:
protected void Page_Load(object sender, EventArgs e)
{
DateTime start_time = DateTime.Now;
DateTime end_time = start_time.AddMinutes(15);
Session["end_t"] = end_time;
}
Instead, you should store the end time only if the timer is not already running:
protected void Page_Load(object sender, EventArgs e)
{
if (Session["end_t"] == null) {
DateTime start_time = DateTime.Now;
DateTime end_time = start_time.AddMinutes(15);
Session["end_t"] = end_time;
}
}
Make a Master page and make your operations with timer there.
or
You can send the counter of timer to next page then do same operations with timer there
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