How can I make a countdown timer?

Question

I want to make a countdown timer in C#, WinForms. I want to be able to select a date from a DateTimePicker and make the timer count down to it showing remaining days, hours, minutes and seconds. How could I go about doing this?

Answer 1

1. Instantiate a timer object
2. set the interval
3. assign a handler for the "tick" event
4. do your job:
   1. get the date
   2. calculate the remaining time

should do the trick.