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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)

static void SetLastAccessTime(
	String^ path, 
	DateTime lastAccessTime


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


The specified path was not found.


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


path is nullptr.


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.


The caller does not have the required permission.


The current operating system is not Windows NT or later.


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 namespace System;
using namespace System::IO;
int main()
      String^ path = "c:\\MyDir";
      if (  !Directory::Exists( path ) )
         Directory::CreateDirectory( path );
      Directory::SetLastAccessTime( path, 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 );


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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