Count down timer works abnormally?

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I created a countdown timer displaying the time as 'hh:mm:ss', this shows the remaining time, but instead of the second decreasing by 1, it decreases by 2? The interval of timer is set to 1000. Here is my handler for Tick event:

VB

Private Sub Tick_Handler(ByVal sender As Object, ByVal e As EventArgs) Handles t.Tick
ts -= 1
RemainingTime.Text = ts\3600 & ":" & (ts Mod 3600)\60 & ":" & ts Mod 60
End Sub

ts is the amount of time in miliseconds.
I can't understand how ts is decreased by 2 instead of 1?
Could you help me explain that strange thing?
Your help would be highly appreciated!

Posted 26-Dec-11 8:52am

supernorb

Updated 26-Dec-11 9:01am

theanil

v2

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-12-26T09:05:00

It can be somewhere else. Just check where else you use the member ts. But better don't — the whole thing makes no sense at all. You are trying to count what you think is milliseconds in the cycle of what is supposed to be a second. And also, why do you think the timer is accurate enough. You don't need this member at all. You can always get current time using System.DateTime.Now. To count remaining time, remember some time and calculate remaining time by subtract operator defined for the type System.DateTime.

You also don't need to convert time into minutes, seconds, etc. — it is already done for you. You can get any units you need, either in fractional form (double floating-point type) or in whole integer. And if this is just for showing value on screen, use System.DateTime.ToString with appropriate format specifier.

See:
http://msdn.microsoft.com/en-us/library/system.datetime.aspx[^],
http://msdn.microsoft.com/en-us/library/zdtaw1bw.aspx[^],
http://msdn.microsoft.com/en-us/library/az4se3k1.aspx[^],
http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx[^].

—SA

Monjurul Habib · Accepted Answer · 2011-12-26T09:11:00

Solution 2

Try similar thread:
Countdown timer

Posted 26-Dec-11 9:11am

Monjurul Habib

CPallini · Accepted Answer · 2011-12-26T10:00:00

Solution 3

Actually the code you posted works fine, at least on my system. Please check if there are bugs in other parts of your application.