Convert AM/PM time to 24 hours format?

Question

I need to convert 12 hours format time (am/pm) to 24 hours format time, e.g. 01:00 PM to 13:00 using C#. How can I convert it?

Answer 1

If you need to convert a string to a DateTime you could try

DateTime dt = DateTime.Parse("01:00 PM"); // No error checking 

or (with error checking)

DateTime dt; bool res = DateTime.TryParse("01:00 PM", out dt); 

Variable dt contains your datetime, so you can write it

dt.ToString("HH:mm"); 

Last one works for every DateTime var you have, so if you still have a DateTime, you can write it out in this way.

Answer 2

You'll want to become familiar with Custom Date and Time Format Strings.

DateTime localTime = DateTime.Now;  // 24 hour format -- use 'H' or 'HH' string timeString24Hour = localTime.ToString("HH:mm", CultureInfo.CurrentCulture);