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Directory.GetLastAccessTime Method

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

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

public static DateTime GetLastAccessTime (
	string path
)
public static DateTime GetLastAccessTime (
	String path
)
public static function GetLastAccessTime (
	path : String
) : DateTime

Parameters

path

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

Return Value

A DateTime structure set to the date and time the specified file or directory was last accessed. This value is expressed in local time.

Exception typeCondition

IOException

The specified path was not found.

UnauthorizedAccessException

The caller does not have the required permission.

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.

NotSupportedException

The path parameter is in an invalid format.

This method is identical to File.GetLastAccessTime.

GetLastAccessTime throws an IOException if the directory specified by path does not exist.

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 The following table lists examples of other typical or related I/O tasks.

To do this...

See the example in this topic...

Create a text file.

How to: Write Text to a File

Write to a text file.

How to: Write Text to a File

Read from a text file.

How to: Read Text from a File

Delete a directory.

Delete

Delete

See the subdirectories of a directory.

GetDirectories

GetDirectories

Find the size of a directory.

Directory

The following code example demonstrates GetLastAccessTime.

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 creation 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 creation 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 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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