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Datetime

Posted Date: 08 Sep 2009 |Updated: 08-Sep-2009 |Category: Console Applications |Author: |Member Level: Gold |Points: 10 |

How to use Datetime



Description:

The below code shows all datetime manipulations...

Code:



namespace ConsoleApplicationDatetime
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Date :"+DateTime.Now.ToString());
            Console.WriteLine("Lep Year (True/False) :" +  DateTime.IsLeapYear(2004).ToString());
            Console.WriteLine("Days in Month :" + DateTime.DaysInMonth(2009, 5));
            DateTime dt = DateTime.Now;
            Console.WriteLine("Date :" + dt.Date.ToString());            
            Console.WriteLine("Day of Date :" + dt.Day.ToString());
            // It will dispalys in total 365 days which day it is...
            Console.WriteLine("Day of Year :" + dt.DayOfYear.ToString());
            Console.WriteLine("Hour :" + dt.Hour.ToString());
            Console.WriteLine("MilliSeconds :" + dt.Millisecond.ToString());
            Console.WriteLine("Day of Week :" + dt.DayOfWeek.ToString());
            Console.WriteLine("Ticks :" + dt.Ticks.ToString());
            Console.WriteLine("Month :" + dt.Month.ToString());
            Console.WriteLine("Minutes :" + dt.Minute.ToString());
            Console.WriteLine("Time of day :" + dt.TimeOfDay.ToString());
            Console.WriteLine("Time Span Max Value :" + TimeSpan.MaxValue.ToString());
            Console.WriteLine(TimeSpan.FromDays(Convert.ToDouble(5)).ToString());
            Console.WriteLine("Add Days:" + dt.AddDays(5));
            Console.WriteLine("Add Hours:" + dt.AddHours(5));
            Console.WriteLine("Add Milliseconds:" + dt.AddMilliseconds(50));
            Console.WriteLine("Add Minutes:" + dt.AddMinutes(5));
            Console.WriteLine("Add Months:" + dt.AddMonths(1));
            Console.WriteLine("Add Seconds:" + dt.AddSeconds(1500));
            Console.WriteLine("Add Years:" + dt.AddYears(1));
            Console.ReadLine();
        }
    }
}


Comments

Author: Sanjay20 Jul 2010 Member Level: Silver   Points : 2

namespace ConAppDate_Time
{
class Program
{
static void Main(string[] args)
{
DateTime date = DateTime.Now;
Console.WriteLine("Date is{0:ddd MMM dd,yyyy}",date);
Console.WriteLine("Time is {0:hh:mm tt}",date);
Console.WriteLine("24 hour time is{0:HH:mm}",date);
Console.WriteLine("Time with seconds:{0:hh:MM:ss tt}",date);
Console.WriteLine("Day of month:{0:m}",date);
Console.WriteLine("Year:{0:yyyy}",date);

}
}
}

FORMAT SPECIFIER FOR DATE TIME

ddd=Represent the full name of the day of the week.
dddd=Represent the full name of the day of the week.
FF=Represent Two digit of the seconds fraction
H=Represent the hour from 0 to 23
HH=Represent the hour from 00 to 23
MM=Represent month as a number from 01 to 12
MMM=Represent full name of the month
s=Representthe second as a number from 0 to 59

Author: Phagu Mahato04 Jan 2014 Member Level: Gold   Points : 7

Since DateTime structure belongs to .NET library, I do not think you can use it simply in your non-.NET console application.If it is a simple Win32 console application, you can try the GetSystemTime function, or a couple of time and localtime functions.We convert it into a DateTime instance using the DateTime.TryParse method .


using System;

class Program
{
    class Student
    {
	public DateTime HiringDate { get; set; }
    }

    static void Main()
    {
	
	DateTime now = DateTime.Now;
	Console.WriteLine(now);

	
	Student Student = new Student() { HiringDate = now };
	Console.WriteLine(Student.HiringDate);
    }
}
Another Example 
Program that uses DateTime.TryParse: C#

using System;

class Program
{
    static void Main()
    {
	
	string input = "2013-12-31";
	DateTime dateTime;
	if (DateTime.TryParse(input, out dateTime))
	{
	    Console.WriteLine(dateTime);
	}

	
	string badInput = "???";
	DateTime dateTime2;
	if (DateTime.TryParse(badInput, out dateTime2))
	{
	    Console.WriteLine(dateTime2);
	}
	else
	{
	    Console.WriteLine("Invalid"); 
	}
    }
}



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