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What is a basic concept of date and time

Ailsa Singh 1796 14-Sep-2016
I am implementing a project on c# programming language.I want to include  date and time in project.please help me.
I would really appreciate your help.

Thanks
c# c# 
Updated on 14-Sep-2016
Ailsa Singh

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Elena Glibart

Elena Glibart

14-Sep-2016

Here is a basic concept of data and time

* DateTime is the class which is already defined in the system.

* General format of the date is Year month and day. 

                   For example: DateTime Date1 = new DateTime(2014, 02, 01);

In the above example below are the input which is already define by the programmer:

Year   : 2014

Month: (02) February

Day     :    01 


* Representation of the date:

Programmer can represent the date in his/her own format by keeping the basic format in their mind 

MMMM (in caps):- full name of the month. eg September

MMM (in caps):- short name of the month. eg. Sept

MM (in caps):- Month in number  

dddd (without caps) :- full name of the  day. eg Saturday

ddd (without caps) :- short name of the day. eg. Sat

dd (without caps)  :- day in number 

yyy & yyyy (without caps) means :  represent year. ex. 2014

yy (without caps) : represent  last two alphabet of the year. ex for 2014 it will represent 14. 

*In formatting operations, custom date and time format strings can be used either with the ToString method of a date and time instance or with a method that supports composite formatting. 

* Syntax for the programmer to represent date in his/her own format.

Console.WriteLine("Today is " +Date1.ToString("ddd yy, MMMM") );

  

* DateTimeOffset is the class which is used for both date & time.

* General format of the date is Year, Month, Day, Hour, Minute, Second &  timespan. 

For example DateTimeOffset Date2 = new DateTimeOffset(2011, 6, 10, 15, 24, 16,

                                              TimeSpan.Zero);  


*Programmer can represent the date in his/her own format by keeping the basic format in their mind  

H: Hour
mm:Minute
ss : Second 
zzz : TimeSpan  

 

* Syntax for the programmer to represent date & time  in his/her own format

Console.WriteLine (" date and time:{0:MM/dd/yy H:mm:ss zzz}", 
                   Date2);

Here is the complete program to implement the date and time logic :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace ConsoleApplication12
{
    class Program
    {
        static void Main(string[] args)
        {
 
            DateTime date1 = new DateTime(2016,09,14);// year
month and day
 
            Console.WriteLine("Today is
" + date1.ToString("ddd yy, MMMM"));
 
            DateTimeOffset Date2 = new DateTimeOffset(2016,09,14, 15, 24, 16, new TimeSpan(1,0,0));
 
                                        
            Console.WriteLine(" date and
time: {0:MM/dd/yy H:mm:ss zzz}",
Date2);
            Console.ReadLine();
 
        }
    }
}
 
 
 
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