DateTime.ToString() Method 변환식
All the patterns: MM/dd/yyyy 10/25/2007 dddd, dd MMMM yyyy Thursday, 25 October 2007 dddd, dd MMMM yyyy HH:mm Thursday, 25 October 2007 00:49 dddd, dd MMMM yyyy hh:mm tt Thursday, 25 October 2007 12:49 AM dddd, dd MMMM yyyy H:mm Thursday, 25 October 2007 0:49 dddd, dd MMMM yyyy h:mm tt Thursday, 25 October 2007 12:49 AM dddd, dd MMMM yyyy HH:mm:ss Thursday, 25 October 2007 00:49:38 MM/dd/yyyy HH..