File.GetLastAccessTimeUtc Method

Definition

Namespace:

System.IO

Assembly:

System.Runtime.dll

Overloads

GetLastAccessTimeUtc(String)	Returns the date and time, in Coordinated Universal Time (UTC), that the specified file or directory was last accessed.
GetLastAccessTimeUtc(SafeFileHandle)	Returns the last access date and time, in Coordinated Universal Time (UTC), of the specified file or directory.

GetLastAccessTimeUtc(String)

Source:

File.cs

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

.NET Framework and .NET Core versions older than 2.1: path is a zero-length string, contains only white space, or contains one or more invalid characters. You can query for invalid characters by using the GetInvalidPathChars() method.

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.

See also

• FileSystemWatcher
• File and Stream I/O
• Reading Text From A File
• How to: Write Text to a File

GetLastAccessTimeUtc(SafeFileHandle)

Source:

File.cs

Returns the last access date and time, in Coordinated Universal Time (UTC), of the specified file or directory.

public:
 static DateTime GetLastAccessTimeUtc(Microsoft::Win32::SafeHandles::SafeFileHandle ^ fileHandle);

public static DateTime GetLastAccessTimeUtc (Microsoft.Win32.SafeHandles.SafeFileHandle fileHandle);

static member GetLastAccessTimeUtc : Microsoft.Win32.SafeHandles.SafeFileHandle -> DateTime

Public Shared Function GetLastAccessTimeUtc (fileHandle As SafeFileHandle) As DateTime

Parameters

fileHandle

SafeFileHandle

A SafeFileHandle to the file or directory for which to obtain last access date and time information.

Returns

DateTime

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

Exceptions

ArgumentNullException

fileHandle is null.

UnauthorizedAccessException

The caller does not have the required permission.