Question

I’m trying to make a countdown timer in my app. I already know the countdown time which is 4 minutes. I have a Timer which ticks every seconds. Now from that how can I update my TextBox so that it shows the time remaining in the format HHMMSS?

EDIT: the problem I’m having is calculating the remaining time. What should I use? Timestamp?

Answer 1

Before you start counting down, note the current time using something like

Dim endTime as DateTime = DateTime.Now.Add(TimeSpan.FromMinutes(4)) 

Then when your tick events occur, you can figure out how much time is left using

Dim timeLeft as TimeSpan = endTime.Subtract(DateTime.Now) 

You can format timeLeft as needed, possibly using .ToString(‘hh:mm:ss’) mentioned by Jared

You can read the docs on TimeSpans and DateTimes for more info on how to use them.