C # string datetime__c#

Method One: Convert.todatetime (String)

String format is required and must be YYYY-MM-DD HH:MM:SS

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Method Two: Convert.todatetime (String, IFormatProvider)

DateTime DT;

DateTimeFormatInfo Dtformat = new System.globalizationdatetimeformatinfo ();

Dtformat.shortdatepattern = "YYYY/MM/DD";

DT = Convert.todatetime ("2011/05/26", Dtformat);

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Method Three: DateTime.ParseExact ()

String datestring = "20110526";

DateTime dt = DateTime.ParseExact (datestring, "YyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);

Or

DateTime dt = DateTime.ParseExact (datestring, "YyyyMMdd", System.Globalization.CultureInfo.InvariantCulture);

Attached reference information:

CultureInfo CultureInfo = cultureinfo.createspecificculture ("en-us");
string format = "ddd MMM d HH:mm:ss zz00 yyyy";
String stringvalue = DateTime.Now.ToString (format, cultureInfo); Get date string
datetime = DateTime.ParseExact ("Wed Aug 16:28:03 +0800", format, cultureInfo);//convert String to own Period

Other

Date format: YyyyMMdd HH:mm:ss (Note that this string is very strict letter case) YYYY: representative of the year mm:  representative of the month dd:  representative days hh:  representative hours (24 hours) mm:  representative minutes SS:&N Bsp Represents the second DateTime.Now.ToShortTimeString ()   DateTime dt = datetime.now;  dt. ToString ();//2005-11-5 13:21:25  dt. Tofiletime (). ToString ();//127756416859912816  dt. TOFILETIMEUTC (). ToString ();//127756704859912816  dt. ToLocalTime (). ToString ();//2005-11-5 21:21:25  dt. Tolongdatestring (). ToString ();//November 5, 2005   DT. Tolongtimestring (). ToString ();//13:21:25  dt. ToOADate (). ToString ();//38661.5565508218  dt. ToShortDateString (). ToString ();//2005-11-5  dt. Toshorttimestring (). ToString ();//13:21  dt. ToUniversalTime (). ToString ();//2005-11-5 5:21:25  dt. Year.tostring ();//2005  dt. Date.tostring ();//2005-11-5 0:00:00  dt. Dayofweek.tostring ();//saturday  dt. Dayofyear.tostring ();//309  dt. Hour.tostring ();//13  dt.Millisecond.ToString ();//441  dt. Minute.tostring ();//30  dt. Month.tostring ();//11&nBsp Dt. Second.tostring ();//28  dt. Ticks.tostring ();//632667942284412864  dt. Timeofday.tostring ();//13:30:28.4412864  dt. ToString ();//2005-11-5 13:47:04  dt. Addyears (1). ToString ();//2006-11-5 13:47:04  dt. AddDays (1.1). ToString ();//2005-11-6 16:11:04  dt. AddHours (1.1). ToString ();//2005-11-5 14:53:04  dt. Addmilliseconds (1.1). ToString ();//2005-11-5 13:47:04  dt. Addmonths (1). ToString ();//2005-12-5 13:47:04  dt. AddSeconds (1.1). ToString ();//2005-11-5 13:47:05  dt. AddMinutes (1.1). ToString ();//2005-11-5 13:48:10  dt. Addticks (1000). ToString ();//2005-11-5 13:47:04  dt.compareto (DT). ToString ();//0  dt. ADD (?). ToString ()//question mark is a time period   dt. Equals ("2005-11-6 16:11:04"). ToString ();//false  dt. Equals (DT). ToString ();//true  dt. GetHashCode (). ToString ();//1474088234  dt. GetType (). ToString ();//system.datetime  dt. GetTypeCode (). ToString ();//datetime

Dt.getdatetimeformats (' s ') [0]. ToString ();//2005-11-05t14:06:25  dt. Getdatetimeformats (' t ') [0]. ToString ();//14:06  dt. Getdatetimeformats (' y ') [0]. ToString ();//November 2005   DT. Getdatetimeformats (' D ') [0]. ToString ();//November 5, 2005   DT. Getdatetimeformats (' D ') [1]. ToString ();//2005 05  dt. Getdatetimeformats (' D ') [2]. ToString ();//week 62,005 05  dt. Getdatetimeformats (' D ') [3]. ToString ()//Saturday November 5, 2005   DT. Getdatetimeformats (' M ') [0]. ToString ();//November 5   dt. Getdatetimeformats (' f ') [0]. ToString ();//November 5, 2005 14:06  dt. Getdatetimeformats (' g ') [0]. ToString ();//2005-11-5 14:06  dt. Getdatetimeformats (' R ') [0]. ToString ();//sat, Nov 14:06:25 gmt  string. Format ("{0:d}", dt);//2005-11-5  string. Format ("{0}", dt);//November 5, 2005   string. Format ("{0:f}", dt);//November 5, 2005 14:23  string. Format ("{0:f}", dt);//November 5, 2005 14:23:23  string. Format ("{0:g}", DT);//2005-11-5 14:23  string. Format ("{0:g}", DT);//2005-11-5 14:23:23  string. ForMat ("{0:m}", dt);//November 5   string. Format ("{0:r}", DT);//sat, Nov 14:23:23 gmt  String.Format ("{0:s}", dt);//2005-11-05t14:23:23  string . Format ("{0:t}", dt);//14:23  string. Format ("{0:t}", dt);//14:23:23  string. Format ("{0:u}", DT);//2005-11-05 14:23:23z  string. Format ("{0:u}", dt);//November 5, 2005 6:23:23  string. Format ("{0:y}", dt);//November 2005   string. Format ("{0}", dt);//2005-11-5 14:23:23  string. Format ("{0:yyyymmddhhmmssffff}", DT);  calculates the number of days difference between 2 dates  -----------------------------------------------   DateTime DT1 = Convert.datetime ("2007-8-1");  datetime DT2 = Convert.datetime ("2007-8-15");  span = DT2. Subtract (DT1);  int daydiff = span. Days + 1;  calculates a month of a certain year  -----------------------------------------------  int day = Datetime.daysinmonth ( 2007, 8;  days = 31;  Add day to date, reduce day  -----------------------------------------------  DateTime dt = datetime.now;  dt. AddDays (1); Add a day &NBSp Dt. AddDays (-1); Reduce day   other year methods similar to ...  Oracle SQL convert date function  -----------------------------------------------   To_date ("2007-6-6", "Yyyy-mm-dd");  to_date ("2007/6/6", ' yyyy/mm/dd ');