DateTimeOffset.ToUnixTimeSeconds() Method in C#

The DateTimeOffset.ToUnixTimeSeconds() method in C# is used to return the number of seconds that have elapsed since 1970-01-01T00:00:00Z.

Syntax

Following is the syntax −

public long ToUnixTimeSeconds ();

Example

Let us now see an example to implement the DateTimeOffset.ToUnixTimeSeconds() method −

using System;
public class Demo {
   public static void Main() {
      DateTimeOffset dateTimeOffset = new DateTimeOffset(1967, 11, 11, 6, 15, 45, new TimeSpan(3, 0, 0));
      Console.WriteLine("DateTimeOffset = {0}", dateTimeOffset);
      Console.WriteLine("Number of seconds: "+dateTimeOffset.ToUnixTimeSeconds());
      DateTimeOffset res = dateTimeOffset.ToOffset(new TimeSpan(-5, 0, 0));
      Console.WriteLine("\nDateTimeOffset (updated) = {0}", res);
      Console.WriteLine("Number of seconds: "+res.ToUnixTimeSeconds());
   }
}

Output

This will produce the following output −

DateTimeOffset = 11/11/1967 6:15:45 AM +03:00
Number of seconds: -67553055
DateTimeOffset (updated) = 11/10/1967 10:15:45 PM -05:00
Number of seconds: -67553055

Example

Let us now see another example to implement the DateTimeOffset.ToUnixTimeSeconds() method −

using System;
public class Demo {
   public static void Main() {
      DateTimeOffset dateTimeOffset = new DateTimeOffset(2019, 11, 11, 6, 15, 45, new TimeSpan(3, 0, 0));
      Console.WriteLine("DateTimeOffset = {0}", dateTimeOffset);
      Console.WriteLine("Number of seconds: "+dateTimeOffset.ToUnixTimeSeconds());
      DateTimeOffset res = dateTimeOffset.ToOffset(new TimeSpan(-5, 0, 0));
      Console.WriteLine("\nDateTimeOffset (updated) = {0}", res);
      Console.WriteLine("Number of seconds: "+res.ToUnixTimeSeconds());
   }
}

Output

This will produce the following output −

DateTimeOffset = 11/11/2019 6:15:45 AM +03:00
Number of seconds: 1573442145
DateTimeOffset (updated) = 11/10/2019 10:15:45 PM -05:00
Number of seconds: 1573442145