DateTime and DateTimeOffset

DateTime can be specified relative to local time, UTC, or unspecified.

DateTime and DateTimeOffset

DateTime and DateTimeOffset differ in how they handle time zones.

A DateTime incorporates a three-state flag indicating whether the DateTime is relative to:

1. The local time on the use's computer
2. UTC
3. Unspecified

A DateTimeOffset stores the offset from UTC as a TimeSpan:

• DateTime ignores the three-state flag in comparisons.
• DateTime considers two values equal if they have the same value.
• DateTimeOffset considers two values equal if they refer to the same point in time.

Initializes a new instance of the DateTime structure to the specified year, month, day, hour, minute, second, and millisecond.

Syntax

public DateTime(
  int year,
  int month,
  int day,
  int hour,
  int minute,
  int second,
  int millisecond
)

using System;
using System.Collections;
using System.Collections.ObjectModel;
using System.Collections.Specialized;

using System.Collections.Generic;
using System.Linq;
using System.Reflection;
class Program
{
    static void Main()
    {
        DateTime date1 = new DateTime(2010, 8, 18, 16, 32, 18, 500);
        Console.WriteLine(date1.ToString("M/dd/yyyy h:mm:ss.fff tt"));


    }
}

The output:

8/18/2010 4:32:18.500 PM