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Directory.SetLastAccessTime Method

Sets the date and time the specified file or directory was last accessed.

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)

public static void SetLastAccessTime (
	string path,
	DateTime lastAccessTime
)
public static void SetLastAccessTime (
	String path, 
	DateTime lastAccessTime
)
public static function SetLastAccessTime (
	path : String, 
	lastAccessTime : DateTime
)
Not applicable.

Parameters

path

The file or directory for which to set the access date and time information.

lastAccessTime

A DateTime containing the value to set for the access date and time of path. This value is expressed in local time.

Exception typeCondition

FileNotFoundException

The specified path was not found.

ArgumentException

path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by InvalidPathChars.

ArgumentNullException

path is a null reference (Nothing in Visual Basic).

PathTooLongException

The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.

UnauthorizedAccessException

The caller does not have the required permission.

PlatformNotSupportedException

The current operating system is not Microsoft Windows NT or later.

ArgumentOutOfRangeException

lastAccessTime specifies a value outside the range of dates or times permitted for this operation.

The path parameter is permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory. To obtain the current working directory, see GetCurrentDirectory.

The path parameter is not case-sensitive.

For a list of common I/O tasks, see Common I/O Tasks.

Windows 95, Windows 98, Windows 98 Second Edition Platform Note: These operating systems do not support this method.

The following code example demonstrates SetLastAccessTime.

using System;
using System.IO;

class Test 
{
    public static void Main() 
    {
        try 
        {
            string path = @"c:\MyDir";
            if (!Directory.Exists(path)) 
            {
                Directory.CreateDirectory(path);
            }
            Directory.SetLastAccessTime(path, new DateTime(1985,5,4));

            // Get the last access time of a well-known directory.
            DateTime dt = Directory.GetLastAccessTime(path);
            Console.WriteLine("The last access time for this directory was {0}", dt);
			
            // Update the last access time.
            Directory.SetLastAccessTime(path, DateTime.Now);
            dt = Directory.GetLastAccessTime(path);
            Console.WriteLine("The last access time for this directory was {0}", dt);
        } 

        catch (Exception e) 
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
    }
}

import System.*;
import System.IO.*;

class Test
{
    public static void main(String[] args)
    {
        try {
            String path = "c:\\MyDir";

            if (!(Directory.Exists(path))) {
                Directory.CreateDirectory(path);
            }
            Directory.SetLastAccessTime(path, new DateTime(1985, 5, 4));

            // Get the last access time of a well-known directory.
            DateTime dt = Directory.GetLastAccessTime(path);

            Console.WriteLine("The last access time for this directory was {0}",
                dt);

            // Update the last access time.
            Directory.SetLastAccessTime(path, DateTime.get_Now());
            dt = Directory.GetLastAccessTime(path);
            Console.WriteLine("The last access time for this directory was {0}",
                dt);
        }
        catch (System.Exception e) {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
    } //main
} //Test

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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