http://blog.163.com/[email protected]/blog/static/549639712010112921658843/we can get the current time by using the Datatime class. We can get different times by invoking various methods in the class: Date (2008-09-04), Time (12:12:12), date + time (2008-09-04 12:11:10), etc.
Get Date + Time
DateTime.Now.ToString (); 2008-9-4 20:02:10
DateTime.Now.ToLocalTime (). ToString (); 2008-9-4 20:12:12
Get Date
DateTime.Now.ToLongDateString (). ToString (); September 4, 2008
DateTime.Now.ToShortDateString (). ToString (); 2008-9-4
DateTime.Now.ToString ("Yyyy-mm-dd"); 2008-09-04
DateTime.Now.Date.ToString (); 2008-9-4 0:00:00
Get time
DateTime.Now.ToLongTimeString (). ToString (); 20:16:16
DateTime.Now.ToShortTimeString (). ToString (); 20:16
DateTime.Now.ToString ("Hh:mm:ss"); 08:05:57
DateTime.Now.TimeOfDay.ToString (); 20:33:50.7187500
Other
Datetime.tofiletime (). ToString (); 128650040212500000
DATETIME.NOW.TOFILETIMEUTC (). ToString (); 128650040772968750
DateTime.Now.ToOADate (). ToString (); 39695.8461709606
DateTime.Now.ToUniversalTime (). ToString (); 2008-9-4 12:19:14
DateTime.Now.Year.ToString (); Get year//2008
DateTime.Now.Month.ToString (); Get Month//9
DateTime.Now.DayOfWeek.ToString (); Get Week//Thursday
DateTime.Now.DayOfYear.ToString (); Get the day of the Week//248
DateTime.Now.Hour.ToString (); Get hours//20
DateTime.Now.Minute.ToString (); Get minutes//31
DateTime.Now.Second.ToString (); Gets the number of seconds//45
N is a number, can be a number of integers, can also matter a decimal
Dt. AddYears (n). ToString (); Time Plus n years
Dt. AddDays (n). ToString (); Plus n days
Dt. AddHours (n). ToString (); Add N Hours
Dt. AddMonths (n). ToString (); Add n months
Dt. AddSeconds (n). ToString (); Plus n seconds
Dt. AddMinutes (n). ToString (); Add n Points
SQL statements use time and date functions
GETDATE (): Gets the current time of the system
DATEADD (datepart,number,date): Calculates a new time value after a time based on a time, such as: DateAdd (Yy,30,getdate ())
DateDiff (datepart,startdate,enddate): Calculates the difference of two time, such as: DateDiff (Yy,getdate (), ' 2008-08-08 ')
Dataname (datepart,date): Gets the value of a different part of time, the return value is a string
DatePart (datepart,date): Similar to Datename, except that the return value is integer type
Day: Gets the number of days of the specified time
Month (date): Gets the month of the specified time
Year (date): Gets the years of the specified time
Select year (GETDATE ()): Current Years
Sync Time:
Http://www.jb51.net/article/65365.htm
C # get current time and sync time