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File::SetLastAccessTime Method

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

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

public:
static void SetLastAccessTime(
	String^ path, 
	DateTime lastAccessTime
)

Parameters

path
Type: System::String

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

lastAccessTime
Type: System::DateTime

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

ExceptionCondition
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 nullptr.

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.

FileNotFoundException

The specified path was not found.

UnauthorizedAccessException

The caller does not have the required permission.

NotSupportedException

path is in an invalid format.

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.

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

The following example checks the file system for the specified file, creating it if necessary, and then sets and gets the last access time.

using namespace System;
using namespace System::IO;
int main()
{
   try
   {
      String^ path = "c:\\Temp\\MyTest.txt";
      if (  !File::Exists( path ) )
      {
         File::Create( path );

         // Update the last access time.    
      }
      File::SetLastAccessTime( path, DateTime(1985,5,4) );

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

      // Update the last access time.
      File::SetLastAccessTime( path, DateTime::Now );
      dt = File::GetLastAccessTime( path );
      Console::WriteLine( "The last access time for this file was {0}.", dt );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "The process failed: {0}", e );
   }

}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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