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C# - How to Get Last Write Time of File or Directory?

Learn, how to get last write time of a file or a directory using C# program?
Submitted by IncludeHelp, on November 03, 2017 [Last updated : March 26, 2023]

Given a file and a directory and we have to find their last write time using C# program.

To get last write time of file or directory in C#, we use File.GetLastWriteTime() method.

File.GetLastWriteTime()

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

Syntax

File.GetLastWriteTime(path);

Parameter(s)

1. path - Location of file or directory.

Last write time contains the following detail:

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

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

using System;
using System.IO;

namespace ConsoleApplication1 {
  class Program {
    static void Main() {
      DateTime dt1;
      DateTime dt2;

      dt1 = File.GetLastWriteTime("ABC.TXT");
      Console.WriteLine("Last Write Time of file(ABC.TXT) : " + dt1);

      dt2 = File.GetLastWriteTime("mydir");
      Console.WriteLine("Last Write Time of directory(mydir) : " + dt2);
    }
  }
}

Output

Last Write Time of file(ABC.TXT) : 10/31/2017 9:38:13 PM
Last Write Time of directory(mydir) : 10/31/2017 9:08:23 PM

Explanation

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

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