DateTimeOffset.ToFileTime() Method in C#

DateTimeOffset.ToFileTime Method is used to convert the value of the current DateTimeOffset object to a Windows file time.

Syntax: public long ToFileTime ();

Return Value: This method returns the value of the current DateTimeOffset object, expressed as a Windows file time.



Exception: This method will give ArgumentOutOfRangeException if the resulting file time would represent a date and time before midnight on January 1, 1601 C.E. Coordinated Universal Time (UTC).

Below programs illustrate the use of DateTimeOffset.ToFileTime() Method:

Example 1:

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// C# program to demonstrate the
// DateTimeOffset.ToFileTime()
// Method
using System;
using System.Globalization;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        try {
  
            // creating object of  DateTimeOffset
            DateTimeOffset offset = new DateTimeOffset(2007,
                    6, 1, 7, 55, 0, new TimeSpan(-5, 0, 0));
  
            // Converts the value of the current
            // DateTimeOffset object to a Windows file time.
            // instance using ToFileTime() method
            long value = offset.ToFileTime();
  
            // Display the time
            Console.WriteLine("Windows file time is {0}", value);
        }
  
        catch (ArgumentOutOfRangeException e) 
        {
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

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Output:

Windows file time is 128251761000000000

Example 2: For ArgumentOutOfRangeException

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// C# program to demonstrate the
// DateTimeOffset.ToFileTime()
// Method
using System;
using System.Globalization;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        try {
  
            // creating object of  DateTimeOffset
            DateTimeOffset offset = new DateTimeOffset(1600,
                    6, 1, 7, 55, 0, new TimeSpan(-5, 0, 0));
  
            // Converts the value of the current
            // DateTimeOffset object to a Windows file time.
            // instance using ToFileTime() method
            long value = offset.ToFileTime();
  
            // Display the time
            Console.WriteLine("Windows file time is {0}", value);
        }
  
        catch (ArgumentOutOfRangeException e) 
        {
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

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Output:

Exception Thrown: System.ArgumentOutOfRangeException

Reference:



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