On meta.stackoverflow.com Joel announced a need for countdown application for the coming DevDays, as I am planing to attend one, I have decided to make one. Maybe I will watch my counter at the conference. ;)

It looks like:

Source code: PeterStegnarDevDaysCountdown.zip (198.51 KB)

I have used WPF, .NET 3.5. The speciality of this solution is custom Stackoverflow digits. :)

Short manual:
-you can find exe in "PeterStegnarDevDaysCountdown\WPF_StackoverflowCountDown\bin\Debug"
-start the app with the following parameters, for example: 0900 "DevDays begins in %s"
-just hit an "Esc" key to exit

Core functionalitiy is, of course, countdown:

            if (second != 0)
            {
                second--;
            }
            else
            {
                second = 59;
                if (minute != 0)
                {
                    minute--;
                }
                else
                {
                    minute = 59;
                    if (hour != 0)
                    {
                        hour--;
                    }
                    else
                    {
                        throw new ArgumentNullException("No valid time entry!");
                    }
                }
            }

What do you think?