Hoy vamos a explicar cómo se hace para pasar una cadena de caracteres a su versión datetime y viceversa
// String a DateTime
String MiString;
MiString= "1999-09-01 21:34 PM";
//MiString= "1999-09-01 21:34 p.m."; //Depende en la configuración regional
DateTime MiDateTime;
MiDateTime= new DateTime();
MiDateTime= DateTime.ParseExact(MiString, "yyyy-MM-dd HH:mm tt",null);
Para pasar de formato DateTime a String tendremos que hacer:
//DateTime a String
MiDateTime = new DateTime(1999, 09, 01, 21, 34, 00);
String MiString;
MiString = MiDateTime.ToString("yyyy-MM-dd HH:mm tt");
Y aquí tenéis las especificaciones de lo que significan las letras utilizadas dentro del ToString (Sacado de esta web)
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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 +/-.
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