String to DateTime
// String to DateTime String MyString; MyString = "1999-09-01 21:34 PM"; //MyString = "1999-09-01 21:34 p.m."; //Depends on your regional settings DateTime MyDateTime; MyDateTime = new DateTime(); MyDateTime = DateTime.ParseExact(MyString, "yyyy-MM-dd HH:mm tt", null);
DateTime to String
//DateTime to String MyDateTime = new DateTime(1999, 09, 01, 21, 34, 00); String MyString; MyString = MyDateTime.ToString("yyyy-MM-dd HH:mm tt");
Format String For Dates
Your format string
is your most important key. In most of my projects, I make it a constant and then refer to the constant value in my code.
The following is the most commonly used format characters:
d - Numeric day of the month without a leading zero. dd - Numeric day of the month with a leading zero. ddd - Abbreviated name of the day of the week. dddd - Full name of the day of the week. f,ff,fff,ffff,fffff,ffffff,fffffff - Fraction of a second. The more Fs the higher the precision. h - 12 Hour clock, no leading zero. hh - 12 Hour clock with leading zero. H - 24 Hour clock, no leading zero. HH - 24 Hour clock with leading zero. m - Minutes with no leading zero. mm - Minutes with leading zero. M - Numeric month with no leading zero. MM - Numeric month with a leading zero. MMM - Abbreviated name of month. MMMM - Full month name. s - Seconds with no leading zero. ss - Seconds with leading zero. t - AM/PM but only the first letter. tt - AM/PM ( a.m. / p.m.) y - Year with out century and leading zero. yy - Year with out century, with leading zero. yyyy - Year with century. zz - Time zone off set with +/-.
摘自:http://www.codeproject.com/Articles/14743/Easy-String-to-DateTime-DateTime-to-String-and-For