File.GetLastAccessTimeUtc Method
Returns the date and time, in coordinated universal time (UTC), that the specified file or directory was last accessed.
Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Parameters
- path
- Type: System.String
The file or directory for which to obtain access date and time information.
Return Value
Type: System.DateTimeA DateTime structure set to the date and time that the specified file or directory was last accessed. This value is expressed in UTC time.
| Exception | Condition |
|---|---|
| UnauthorizedAccessException | The caller does not have the required permission. |
| 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 null. |
| 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. |
| NotSupportedException | path is in an invalid format. |
 Note |
|---|
This method may return an inaccurate value, because it uses native functions whose values may not be continuously updated by the operating system. |
If the file described in the path parameter does not exist, this method returns 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC).
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.
- FileIOPermission
for reading from the specified file. Associated enumeration: FileIOPermissionAccess.Read
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.
