File.GetLastAccessTimeUtc(String) Method

Definition

Namespace:: System.IO

Assemblies:: mscorlib.dll, System.IO.FileSystem.dll

Assembly:: System.IO.FileSystem.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Returns the date and time, in coordinated universal time (UTC), that the specified file or directory was last accessed.

public:
 static DateTime GetLastAccessTimeUtc(System::String ^ path);

public static DateTime GetLastAccessTimeUtc (string path);

static member GetLastAccessTimeUtc : string -> DateTime

Public Shared Function GetLastAccessTimeUtc (path As String) As DateTime

Parameters

path: String

The file or directory for which to obtain access date and time information.

Returns

DateTime

A DateTime structure set to the date and time that the specified file or directory was last accessed. This value is expressed in UTC time.

Exceptions

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.

NotSupportedException

path is in an invalid format.

Remarks

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.

Applies to