ASP.NET Date Programming

//String to DateTime
String MyString;
MyString = "1999-09-01 21:34 PM";
DateTime MyDateTime;
MyDateTime = new DateTime();
MyDateTime = DateTime.ParseExact(MyString, "yyyy-MM-dd HH:mm tt", null);

//DateTime to String
MyDateTime = new DateTime(1999, 09, 01, 21, 34, 00);
String MyString; MyString = MyDateTime.ToString("yyyy-MM-dd HH:mm tt");

// FORMATS
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 -
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 +/-.


http://www.codeproject.com/KB/cs/String2DateTime.aspx