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Directory.SetLastAccessTimeUtc Method

Note: This namespace, class, or member is supported only in version 1.1 of the .NET Framework.

Sets the date and time, in universal coordinated time (UTC) format, that the specified file or directory was last accessed.

[Visual Basic]
Public Shared Sub SetLastAccessTimeUtc( _
   ByVal path As String, _
   ByVal lastAccessTimeUtc As DateTime _
public static void SetLastAccessTimeUtc(
 string path,
 DateTime lastAccessTimeUtc
public: static void SetLastAccessTimeUtc(
 String* path,
 DateTime lastAccessTimeUtc
public static function SetLastAccessTimeUtc(
   path : String,
 lastAccessTimeUtc : DateTime


The file or directory for which to set the access date and time information.
A DateTime containing the value to set for the access date and time of path. This value is expressed in UTC time.


Exception Type Condition
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.


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.

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. Writing Text to a File
Write to a text file. Writing Text to a File
Read from a text file. Reading Text from a File
Copy a directory. Directory
Delete a directory. Delete


See the subdirectories of a directory. GetDirectories


Find the size of a directory. Directory

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


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

.NET Framework Security: 

See Also

Directory Class | Directory Members | System.IO Namespace | Working with I/O | Reading Text from a File | Writing Text to a File

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