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C# program to set last write time of file or directory

In this C# program, we are going to learn how to set last write time of a file or a directory? To set this, we are using ‘SetLastWriteTime()’ of ‘File’ class.
Submitted by IncludeHelp, on November 03, 2017

Given a file and we have to set its last write time using C# program.

File.SetLastWriteTime()

This is a method of "File class, it is used to set last write time of a file/directory.

Syntax:

File.SetLastWriteTime(path);

Parameter(s):

  1. path - Location of file or directory.

We can set following detail of last write time:

  • Date
  • Month
  • Year
  • Hour
  • Minute
  • Second
  • AM/PM

Program

using System;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main()
        {
            DateTime dt1;
            
            Console.WriteLine("Time before set last write time:");
           
            dt1 = File. SetLastWriteTime("ABC.TXT");
            Console.WriteLine("\tLast write Time of file(ABC.TXT) : " + dt1);

            
            File. SetLastWriteTime("ABC.TXT", DateTime.Now);
           
            Console.WriteLine("Time After set last write time:");
           
            dt1 = File. SetLastWriteTime("ABC.TXT");
            Console.WriteLine("\tLast write Time of file(ABC.TXT) : " + dt1);

           
        }
    }
}

Output

Time before set last write time:
        Last write  Time of file(ABC.TXT) : 10/31/2017 9:50:59 PM
Time After set last write  time:
        Last write  Time of file(ABC.TXT) : 10/31/2017 9:55:36 PM

Note: In above program, we need to remember, when we use "File" class, System.IO namespace must be included in the program.






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