Csharp/C Sharp by API/System/DateTime

Содержание

1 DateTime.AddSeconds
2 DateTime.Add(TimeSpan)
3 DateTime.AddYears
4 DateTime.Compare(DateTime first, DateTime second)
5 DateTime.Date
6 DateTime
7 DateTime.DayOfWeek
8 DateTime.DaysInMonth
9 DateTime.Equals(DateTime dt)
10 DateTime.Equals(DateTime first, DateTime second)
11 DateTime.FromFileTime
12 DateTime.IsDaylightSavingTime()
13 DateTime.IsLeapYear
14 DateTime.MaxValue
15 DateTime.Millisecond
16 DateTime.Now
17 DateTime.Parse
18 DateTime.ParseExact
19 DateTime.Second
20 DateTime.Subtract(TimeSpan t)
21 DateTime.Ticks
22 DateTime.TimeOfDay
23 DateTime - TimeSpan
24 DateTime.Today
25 DateTime.ToFileTime
26 DateTime.ToLongDateString()
27 DateTime.ToLongTimeString()
28 DateTime.ToShortDateString()
29 DateTime.ToShortTimeString()
30 DateTime.ToString(String format)
31 DateTime.ToString(String format, CultureInfo ci)
32 DateTime.UtcNow
33 DateTime.Year
34 new DateTime
35 new DateTime(0)
36 new DateTime(year, month, day, hour, minute, second, millisecond)

DateTime.AddSeconds

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; public class MainClass{

  public static void Main(){
       DateTime endTime = DateTime.Now.AddSeconds(123);
       while (DateTime.Now < endTime)
       {
           Console.WriteLine(DateTime.Now.TimeOfDay.ToString());
       }
  }

}

 </source>

DateTime.Add(TimeSpan)

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   
   DateTime myDateTime = DateTime.Parse("1/11/2004 23:10:30");
   
   TimeSpan myTimeSpan = new TimeSpan(1, 2, 4, 10);
   DateTime myDateTime7 = myDateTime.Add(myTimeSpan);
   Console.WriteLine("myTimeSpan = " + myTimeSpan);
   Console.WriteLine("myDateTime6.Add(myTimeSpan) = " + myDateTime7);
 }

}

 </source>

DateTime.AddYears

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime9 = new DateTime(2004, 1, 1);
   Console.WriteLine("Initial myDateTime9 = " + myDateTime9);
   myDateTime9 = myDateTime9.AddYears(1);
   myDateTime9 = myDateTime9.AddMonths(5);
   myDateTime9 = myDateTime9.AddDays(3);
   myDateTime9 = myDateTime9.AddMinutes(30);
   myDateTime9 = myDateTime9.AddSeconds(15);
   Console.WriteLine("Final myDateTime9 = " + myDateTime9);
 }

}

 </source>

DateTime.Compare(DateTime first, DateTime second)

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime3 = new DateTime(2004, 1, 13);
   DateTime myDateTime4 = new DateTime(2004, 1, 14);
   Console.WriteLine("myDateTime3 = " + myDateTime3);
   Console.WriteLine("myDateTime4 = " + myDateTime4);
   int intResult = DateTime.rupare(myDateTime3, myDateTime4);
   Console.WriteLine("DateTime.rupare(myDateTime3, myDateTime4) = " + DateTime.rupare(myDateTime3, myDateTime4));
 }

}

 </source>

DateTime.Date

<source lang="csharp"> using System; class MainClass {

   public static void Main() {
       DateTime myDateTime = DateTime.Now;
       Console.WriteLine("myDateTime.Date = " + myDateTime.Date);
       Console.WriteLine("myDateTime.Day = " + myDateTime.Day);
       Console.WriteLine("myDateTime.DayOfWeek = " + myDateTime.DayOfWeek);
       Console.WriteLine("myDateTime.DayOfYear = " + myDateTime.DayOfYear);
       Console.WriteLine("myDateTime.Ticks = " + myDateTime.Ticks);
       Console.WriteLine("myDateTime.TimeOfDay = " + myDateTime.TimeOfDay);
   }

}

 </source>

DateTime

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime3 = new DateTime(2004, 1, 13);
   DateTime myDateTime4 = new DateTime(2004, 1, 14);
   Console.WriteLine("myDateTime3 = " + myDateTime3);
   Console.WriteLine("myDateTime4 = " + myDateTime4);
   
   bool boolResult = myDateTime3 < myDateTime4;
   Console.WriteLine("myDateTime3 < myDateTime4 is " +  boolResult);
 }

}

 </source>

DateTime.DayOfWeek

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   
   DateTime myDateTime = DateTime.Now;
   Console.WriteLine("myDateTime.Date = " + myDateTime.Date);
   Console.WriteLine("myDateTime.Day = " + myDateTime.Day);
   Console.WriteLine("myDateTime.DayOfWeek = " + myDateTime.DayOfWeek);
   Console.WriteLine("myDateTime.DayOfYear = " + myDateTime.DayOfYear);
   Console.WriteLine("myDateTime.Ticks = " + myDateTime.Ticks);
   Console.WriteLine("myDateTime.TimeOfDay = " + myDateTime.TimeOfDay);

}

 </source>

DateTime.DaysInMonth

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   int days = DateTime.DaysInMonth(2004, 1);
   Console.WriteLine("DateTime.DaysInMonth(2004, 1) = " + days);
 }

}

 </source>

DateTime.Equals(DateTime dt)

<source lang="csharp"> using System; class MainClass {

   public static void Main() {
       DateTime myDateTime3 = new DateTime(2004, 1, 13);
       DateTime myDateTime4 = new DateTime(2004, 1, 14);
       bool boolResult = DateTime.Equals(myDateTime3, myDateTime4);
       Console.WriteLine("DateTime.Equals(myDateTime3,myDateTime4) = " + boolResult);
       boolResult = myDateTime3.Equals(myDateTime4);
       Console.WriteLine("myDateTime3.Equals(myDateTime4) is " + boolResult);
   }

}

 </source>

DateTime.Equals(DateTime first, DateTime second)

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime3 = new DateTime(2004, 1, 13);
   DateTime myDateTime4 = new DateTime(2004, 1, 14);
   Console.WriteLine("myDateTime3 = " + myDateTime3);
   Console.WriteLine("myDateTime4 = " + myDateTime4);
   
   
   bool boolResult = DateTime.Equals(myDateTime3, myDateTime4);
   Console.WriteLine("DateTime.Equals(myDateTime3, myDateTime4) = " + boolResult);
   boolResult = myDateTime3.Equals(myDateTime4);
   Console.WriteLine("myDateTime3.Equals(myDateTime4) is " + boolResult);
 }

}

 </source>

DateTime.FromFileTime

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime10 = new DateTime(2004, 1, 15, 23, 2, 5);
   long myFileTime = myDateTime10.ToFileTime();
   DateTime myDateTime11 = DateTime.FromFileTime(myFileTime);
   Console.WriteLine("DateTime.FromFileTime() = " + myDateTime11);
 }

}

 </source>

DateTime.IsDaylightSavingTime()

<source lang="csharp"> using System; using System.Collections.Generic; using System.Text; class Program {

   static void Main(string[] args) {
       DateTime dt = new DateTime(2004, 10, 17);
       dt.AddMonths(2);  // Month is now December.
       Console.WriteLine("Daylight savings: {0}", dt.IsDaylightSavingTime());
   }

}

 </source>

DateTime.IsLeapYear

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   bool boolResult = DateTime.IsLeapYear(2004);
   Console.WriteLine("DateTime.IsLeapYear(2004) = " + boolResult);
 }

}

 </source>

DateTime.MaxValue

using System; using System.Globalization; class MainClass {

   public static void Main() {
       
       Console.WriteLine("Min Date: {0}", DateTime.MinValue.ToString());
       Console.WriteLine("Max Date: {0}", DateTime.MaxValue.ToString());
   }

}

 </source>

DateTime.Millisecond

<source lang="csharp"> using System; class MainClass {

 public static void DisplayDateTime(string name, DateTime myDateTime) {
   Console.WriteLine(name + " = " + myDateTime);
   Console.WriteLine(name + ".Year = " + myDateTime.Year);
   Console.WriteLine(name + ".Month = " + myDateTime.Month);
   Console.WriteLine(name + ".Day = " + myDateTime.Day);
   Console.WriteLine(name + ".Hour = " + myDateTime.Hour);
   Console.WriteLine(name + ".Minute = " + myDateTime.Minute);
   Console.WriteLine(name + ".Second = " + myDateTime.Second);
   Console.WriteLine(name + ".Millisecond = " + myDateTime.Millisecond);
   Console.WriteLine(name + ".Ticks = " + myDateTime.Ticks);
 }
 public static void Main()
 {
   
   DateTime myDateTime4 = new DateTime(0);
   TimeSpan myTimeSpan = new TimeSpan(4, 12, 10);
   myDateTime4 += myTimeSpan;
   DisplayDateTime("myDateTime4", myDateTime4);
   
   
 }

}

 </source>

DateTime.Now

<source lang="csharp"> using System; class MainClass {

   public static void Main(string[] args)
   {
       DateTime now = DateTime.Now;
       Console.WriteLine("Now   : {0}", now);
   }

}

 </source>

DateTime.Parse

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   
   DateTime myDateTime = DateTime.Parse("1/11/2004 23:10:30");
   
   TimeSpan myTimeSpan = new TimeSpan(1, 2, 4, 10);
   DateTime myDateTime8 = myDateTime + myTimeSpan;
   Console.WriteLine("myDateTime + myTimeSpan = " + myDateTime8);
 }

}

 </source>

DateTime.ParseExact

<source lang="csharp"> using System; class MainClass {

   public static void Main(string[] args)
   {
       DateTime dt6 = DateTime.ParseExact("2:13:30 PM", "h:mm:ss tt", null);
       Console.WriteLine(dt6);
   }

}

 </source>

DateTime.Second

<source lang="csharp"> using System;

class MainClass {

 public static void Main() {  
   string t; 
   int seconds; 

   DateTime dt = DateTime.Now; 
   seconds = dt.Second; 

   if(seconds != dt.Second) { 
     seconds = dt.Second; 

     t = dt.ToString("T"); 
     Console.WriteLine(t); 
   } 
 }

}

 </source>

DateTime.Subtract(TimeSpan t)

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   
   DateTime myDateTime = DateTime.Parse("1/11/2004 23:10:30");
   
   TimeSpan myTimeSpan = new TimeSpan(1, 2, 4, 10);
   DateTime myDateTime7 = myDateTime.Subtract(myTimeSpan);
   Console.WriteLine("myTimeSpan = " + myTimeSpan);
   Console.WriteLine("myDateTime6.Subtract(myTimeSpan) = " + myDateTime7);
 }

}

 </source>

DateTime.Ticks

<source lang="csharp"> using System; class MainClass {

   public static void DisplayDateTime(string name, DateTime myDateTime) {
       Console.WriteLine(name + " = " + myDateTime);
       Console.WriteLine(name + ".Year = " + myDateTime.Year);
       Console.WriteLine(name + ".Month = " + myDateTime.Month);
       Console.WriteLine(name + ".Day = " + myDateTime.Day);
       Console.WriteLine(name + ".Hour = " + myDateTime.Hour);
       Console.WriteLine(name + ".Minute = " + myDateTime.Minute);
       Console.WriteLine(name + ".Second = " + myDateTime.Second);
       Console.WriteLine(name + ".Millisecond = " + myDateTime.Millisecond);
       Console.WriteLine(name + ".Ticks = " + myDateTime.Ticks);
   }
   public static void Main() {
       int year = 2008;
       int month = 8;
       int day = 25;
       DateTime myDateTime = new DateTime(year, month, day);
       int hour = 23;
       int minute = 30;
       int second = 12;
       int millisecond = 5;
       DateTime myDateTime2 = new DateTime(year, month, day, hour, minute, second, millisecond);
       System.Globalization.JulianCalendar myCalendar = new System.Globalization.JulianCalendar();
       DateTime myDateTime3 = new DateTime(year, month, day, myCalendar);
       DateTime myDateTime4 = new DateTime(0);
       DisplayDateTime("myDateTime", myDateTime);
       DisplayDateTime("myDateTime2", myDateTime2);
       DisplayDateTime("myDateTime3", myDateTime3);
       DisplayDateTime("myDateTime4", myDateTime4);
       TimeSpan myTimeSpan = new TimeSpan(4, 12, 10);
       myDateTime4 += myTimeSpan;
       DisplayDateTime("myDateTime4", myDateTime4);
   }

}

 </source>

DateTime.TimeOfDay

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   
   DateTime myDateTime = DateTime.Now;
   Console.WriteLine("myDateTime.Date = " + myDateTime.Date);
   Console.WriteLine("myDateTime.Day = " + myDateTime.Day);
   Console.WriteLine("myDateTime.DayOfWeek = " + myDateTime.DayOfWeek);
   Console.WriteLine("myDateTime.DayOfYear = " + myDateTime.DayOfYear);
   Console.WriteLine("myDateTime.Ticks = " + myDateTime.Ticks);
   Console.WriteLine("myDateTime.TimeOfDay = " + myDateTime.TimeOfDay);

}

 </source>

DateTime - TimeSpan

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   
   DateTime myDateTime = DateTime.Parse("1/11/2004 23:10:30");
   
   TimeSpan myTimeSpan = new TimeSpan(1, 2, 4, 10);
   DateTime myDateTime8 = myDateTime - myTimeSpan;
   Console.WriteLine("myDateTime - myTimeSpan = " + myDateTime8);
 }

}

 </source>

DateTime.Today

<source lang="csharp"> using System; using System.Globalization; class MainClass {

   public static void Main() {
       
       Console.WriteLine("Current Date and Time: {0}", DateTime.Now.ToString());
       Console.WriteLine("Current Date Only: {0}", DateTime.Today.ToString());
   }

}

 </source>

DateTime.ToFileTime

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime10 = new DateTime(2004, 1, 15, 23, 2, 5);
   long myFileTime = myDateTime10.ToFileTime();
   Console.WriteLine("myDateTime10.ToFileTime() = " + myDateTime10.ToFileTime());
 }

}

 </source>

DateTime.ToLongDateString()

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime11 = new DateTime(2004, 1, 15, 23, 2, 5);
   Console.WriteLine("myDateTime11 = " + myDateTime11);
   Console.WriteLine("myDateTime11.ToLongDateString() = " + myDateTime11.ToLongDateString());
   Console.WriteLine("myDateTime11.ToShortDateString() = " + myDateTime11.ToShortDateString());

}

 </source>

DateTime.ToLongTimeString()

<source lang="csharp"> using System; using System.Globalization; using System.Threading; class Class1 {

 static void Main(string[] args) {
     CultureInfo MyCulture = new CultureInfo("fr-FR");
     DateTime MyDate = System.DateTime.Now;
     Thread.CurrentThread.CurrentCulture = MyCulture;
     Console.WriteLine(MyDate.ToLongTimeString());
     Console.WriteLine(MyDate.ToShortDateString());
     
  }

}

 </source>

DateTime.ToShortDateString()

<source lang="csharp"> using System; using System.Globalization; using System.Threading; class Class1 {

 static void Main(string[] args) {
     CultureInfo MyCulture = new CultureInfo("fr-FR");
     DateTime MyDate = System.DateTime.Now;
     Thread.CurrentThread.CurrentCulture = MyCulture;
     Console.WriteLine(MyDate.ToLongTimeString());
     Console.WriteLine(MyDate.ToShortDateString());
     
  }

}

 </source>

DateTime.ToShortTimeString()

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime11 = new DateTime(2004, 1, 15, 23, 2, 5);
   Console.WriteLine("myDateTime11 = " + myDateTime11);
   Console.WriteLine("myDateTime11.ToLongTimeString() = " +  myDateTime11.ToLongTimeString());
   Console.WriteLine("myDateTime11.ToShortTimeString() = " +  myDateTime11.ToShortTimeString());
 }

}

 </source>

DateTime.ToString(String format)

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   DateTime myDateTime = new DateTime(2004, 1, 12, 22, 2, 10);
   Console.WriteLine("myDateTime.ToString() = " + myDateTime.ToString());
   Console.WriteLine("myDateTime.ToString(\"MMMM dd, yyyy\") = " + myDateTime.ToString("MMMM dd, yyyy"));
 }

}

 </source>

DateTime.ToString(String format, CultureInfo ci)

<source lang="csharp"> using System; using System.Globalization; public class Example21_10 {

 public static void Main() 
 {
   // create a date and a currency value
   DateTime dtNow = DateTime.Now;
   Double curOriginal = 12345.67;
   // and format the variables for a specific culture
   CultureInfo ci = new CultureInfo("en-US");
   string sLocalizedDate = dtNow.ToString("d", ci);
   string sLocalizedCur = curOriginal.ToString("c", ci);
   // print them out
   Console.WriteLine(sLocalizedDate);
   Console.WriteLine(sLocalizedCur);
   // and format them for a second culture
   CultureInfo ci2 = new CultureInfo("en-GB");
   string sLocalizedDate2 = dtNow.ToString("d", ci2);
   string sLocalizedCur2 = curOriginal.ToString("c", ci2);
   // print them out again
   Console.WriteLine(sLocalizedDate2);
   Console.WriteLine(sLocalizedCur2);
 }

}

 </source>

DateTime.UtcNow

<source lang="csharp"> using System; class MainClass {

 public static void Main()
 {
   
   Console.WriteLine("DateTime.Now = " + DateTime.Now);
   Console.WriteLine("DateTime.UtcNow = " + DateTime.UtcNow);
   DateTime myDateTime = DateTime.Now;
   Console.WriteLine("myDateTime = " + myDateTime);
   DateTime myDateTime2 = DateTime.UtcNow;
   Console.WriteLine("myDateTime = " + myDateTime);
 }

}

 </source>

DateTime.Year

<source lang="csharp"> using System; class MainClass {

 public static void DisplayDateTime(string name, DateTime myDateTime) {
   Console.WriteLine(name + " = " + myDateTime);
   Console.WriteLine(name + ".Year = " + myDateTime.Year);
   Console.WriteLine(name + ".Month = " + myDateTime.Month);
   Console.WriteLine(name + ".Day = " + myDateTime.Day);
   Console.WriteLine(name + ".Hour = " + myDateTime.Hour);
   Console.WriteLine(name + ".Minute = " + myDateTime.Minute);
   Console.WriteLine(name + ".Second = " + myDateTime.Second);
   Console.WriteLine(name + ".Millisecond = " + myDateTime.Millisecond);
   Console.WriteLine(name + ".Ticks = " + myDateTime.Ticks);
 }
 public static void Main()
 {
   
   int year = 2002;
   int month = 12;
   int day = 25;
   DateTime myDateTime = new DateTime(year, month, day);
   DisplayDateTime("myDateTime", myDateTime);
 }

}

 </source>

new DateTime

<source lang="csharp"> using System; using System.Collections.Generic; using System.Globalization; using System.IO; using System.Text; using System.Security.Cryptography; public class MainClass {

   public static void Main()
   {
       DateTime dt1 = new DateTime(2004, 10, 19);
       Console.WriteLine("dt1: {0}", dt1);
       DateTime dt2 = new DateTime(2004, 10, 19, 22, 47, 35);
       Console.WriteLine("dt2: {0}", dt2);
       DateTime dt3 = new DateTime(2004, 10, 19, 22, 47, 35, 259);
       Console.WriteLine("dt3: {0}", dt3);
   }

}

 </source>

new DateTime(0)

<source lang="csharp"> using System; class MainClass {

 public static void DisplayDateTime(string name, DateTime myDateTime) {
   Console.WriteLine(name + " = " + myDateTime);
   Console.WriteLine(name + ".Year = " + myDateTime.Year);
   Console.WriteLine(name + ".Month = " + myDateTime.Month);
   Console.WriteLine(name + ".Day = " + myDateTime.Day);
   Console.WriteLine(name + ".Hour = " + myDateTime.Hour);
   Console.WriteLine(name + ".Minute = " + myDateTime.Minute);
   Console.WriteLine(name + ".Second = " + myDateTime.Second);
   Console.WriteLine(name + ".Millisecond = " + myDateTime.Millisecond);
   Console.WriteLine(name + ".Ticks = " + myDateTime.Ticks);
 }
 public static void Main()
 {
   
   DateTime myDateTime4 = new DateTime(0);
   DisplayDateTime("myDateTime4", myDateTime4);
 }

}

 </source>

new DateTime(year, month, day, hour, minute, second, millisecond)

<source lang="csharp"> using System; class MainClass {

 public static void DisplayDateTime(string name, DateTime myDateTime) {
   Console.WriteLine(name + " = " + myDateTime);
   Console.WriteLine(name + ".Year = " + myDateTime.Year);
   Console.WriteLine(name + ".Month = " + myDateTime.Month);
   Console.WriteLine(name + ".Day = " + myDateTime.Day);
   Console.WriteLine(name + ".Hour = " + myDateTime.Hour);
   Console.WriteLine(name + ".Minute = " + myDateTime.Minute);
   Console.WriteLine(name + ".Second = " + myDateTime.Second);
   Console.WriteLine(name + ".Millisecond = " + myDateTime.Millisecond);
   Console.WriteLine(name + ".Ticks = " + myDateTime.Ticks);
 }
 public static void Main()
 {
   int hour = 23;
   int minute = 30;
   int second = 12;
   int millisecond = 5;
   int year = 2004;
   int month = 5;
   int day = 12;
   DateTime myDateTime = new DateTime(year, month, day, hour, minute, second, millisecond);
   DisplayDateTime("myDateTime", myDateTime);
 }

}

 </source>

Csharp/C Sharp by API/System/DateTime

Содержание

DateTime.AddSeconds

DateTime.Add(TimeSpan)

DateTime.AddYears

DateTime.Compare(DateTime first, DateTime second)

DateTime.Date

DateTime

DateTime.DayOfWeek

DateTime.DaysInMonth

DateTime.Equals(DateTime dt)

DateTime.Equals(DateTime first, DateTime second)

DateTime.FromFileTime

DateTime.IsDaylightSavingTime()

DateTime.IsLeapYear

DateTime.MaxValue

DateTime.Millisecond

DateTime.Now

DateTime.Parse

DateTime.ParseExact

DateTime.Second

DateTime.Subtract(TimeSpan t)

DateTime.Ticks

DateTime.TimeOfDay

DateTime - TimeSpan

DateTime.Today

DateTime.ToFileTime

DateTime.ToLongDateString()

DateTime.ToLongTimeString()

DateTime.ToShortDateString()

DateTime.ToShortTimeString()

DateTime.ToString(String format)

DateTime.ToString(String format, CultureInfo ci)

DateTime.UtcNow

DateTime.Year

new DateTime

new DateTime(0)

new DateTime(year, month, day, hour, minute, second, millisecond)

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