자주쓰는 문법인데도 매번 까먹는거같다.
DateTime.ToString([형식]);
String[] formats = { "G", "MM/yyyy", @"MM\/dd\/yyyy HH:mm",
"yyyyMMdd" };
G : 8/18/2015 1:31:17 PM
MM/yyyy : 08/2015
MM\/dd\/yyyy HH:mm : 08/18/2015 13:31
yyyyMMdd : 20150818
string[] standardFmts = {"d", "D", "f", "F", "g", "G", "m", "o",
"R", "s", "t", "T", "u", "U", "y"};
d : 6/15/2008
D : Sunday, June 15, 2008
f : Sunday, June 15, 2008 9:15 PM
F : Sunday, June 15, 2008 9:15:07 PM
g : 6/15/2008 9:15 PM
G : 6/15/2008 9:15:07 PM
m : June 15
o : 2008-06-15T21:15:07.0000000
R : Sun, 15 Jun 2008 21:15:07 GMT
s : 2008-06-15T21:15:07
t : 9:15 PM
T : 9:15:07 PM
u : 2008-06-15 21:15:07Z
U : Monday, June 16, 2008 4:15:07 AM
y : June, 2008
string[] customFmts = {"h:mm:ss.ff t", "d MMM yyyy", "HH:mm:ss.f",
"dd MMM HH:mm:ss", @"\Mon\t\h\: M", "HH:mm:ss.ffffzzz" };
h:mm:ss.ff t: 9:15:07.00 P
d MMM yyyy : 15 Jun 2008
HH:mm:ss.f : 21:15:07.0
dd MMM HH:mm:ss : 15 Jun 21:15:07
\Mon\t\h\: M : Month: 6
HH:mm:ss.ffffzzz : 21:15:07.0000-07:00
https://msdn.microsoft.com/ko-kr/library/zdtaw1bw(v=vs.110).aspx
