FileSystemInfo.LastAccessTimeUtc Property


Gets or sets the time, in coordinated universal time (UTC), that the current file or directory was last accessed.

 property DateTime LastAccessTimeUtc { DateTime get(); void set(DateTime value); };
public DateTime LastAccessTimeUtc { get; set; }
member this.LastAccessTimeUtc : DateTime with get, set
Public Property LastAccessTimeUtc As DateTime

Property Value

The UTC time that the current file or directory was last accessed.



Refresh() cannot initialize the data.

The current operating system is not Windows NT or later.

The caller attempts to set an invalid access time.



This method may return an inaccurate value because it uses native functions whose values may not be continuously updated by the operating system.

The value of the LastAccessTimeUtc property is pre-cached if the current instance of the FileSystemInfo object was returned from any of the following DirectoryInfo methods:

To get the latest value, call the Refresh method.

If the file described in the FileSystemInfo object does not exist, this property returns 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC).

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


for setting the last access time. Associated enumeration: Write

Applies to

See also