I didn’t notice this until today, the DateTime I retrieve from my database has the format of yyyy/MM/dd hh:mm:ss.fff
and if I use DateTime.Parse(), the .fff value will be lost.
After searching google, I find out that not only DateTime.Parse() has this one problem, it also has problem with culture setting.
So, whenever you what to parse a DateTime, use DateTime.ParseExact().
Here is an useful example :
string[] DateTimeList = { "yyyy/M/d tt hh:mm:ss", "yyyy/MM/dd tt hh:mm:ss", "yyyy/MM/dd HH:mm:ss", "yyyy/M/d HH:mm:ss", "yyyy/M/d", "yyyy/MM/dd" }; DateTime dt = DateTime.ParseExact(" 2008/ 3/18 PM 02: 50:23 ", DateTimeList,CultureInfo.InvariantCulture, DateTimeStyles.AllowWhiteSpaces );
Remember, CultureInfo is important to parsing, for example tt in Chinese will be 上午/下午, in en-US will be AM/PM. You can use CultureInfo.CreateSpecificCulture() to create the culture you need.
A small pattern reference
yyyy | year ‘2009’ |
MM | month ’04’ |
dd | day ’17’ |
HH | 24 hour ’23’ |
hh | 12 hour ’11’ |
mm | minutes ’59’ |
ss | seconds ’30’ |
tt | AM/PM |
zzz | GMT |