Parameters

path

A string containing the name of the file for which to set the access date and time information. [Edit]

lastAccessTime

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

Permissions

Type	Reason
System.Security.Permissions.FileIOPermission [Edit]	Requires permission to write to the specified file. See System.Security.Permissions.FileIOPermissionAccess.Write.

Exceptions

Type	Reason
ArgumentException	path is a zero-length string, contains only white space, or contains one or more implementation-specific invalid characters. [Edit]
ArgumentNullException	path is null. [Edit]
System.IO.IOException	An I/O error occurred while performing the operation. [Edit]
System.IO.PathTooLongException	The length of path or the absolute path information for path exceeds the system-defined maximum length. [Edit]
System.Security.SecurityException	The caller does not have the required permission. [Edit]
ArgumentOutOfRangeException	lastAccessTime specifies a value outside the range of date/times permitted for this operation. [Edit]
System.IO.FileNotFoundException	path was not found. [Edit]
UnauthorizedAccessException	The caller does not have the required permission. [Edit]

Remarks

The path argument is permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory.

Note: To obtain the current working directory, see Directory.GetCurrentDirectory.

On platforms that do not support this feature, this method has no effect. If this feature is supported, the range of dates that is valid for this operation is implementation-specific.

[Edit]

Requirements

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0