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File.GetLastWriteTimeUtc Method

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

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)

public static DateTime GetLastWriteTimeUtc (
	string path
)
public static DateTime GetLastWriteTimeUtc (
	String path
)
public static function GetLastWriteTimeUtc (
	path : String
) : DateTime

Parameters

path

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

Return Value

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

Exception typeCondition

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 a null reference (Nothing in Visual Basic).

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.

IOException

The specified path was not found.

NotSupportedException

path is in an invalid format.

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.

The following table lists examples of other typical or related I/O tasks.

To do this...

See the example in this topic...

Write to a text file.

How to: Write Text to a File

Read from a text file.

How to: Read Text from a File

Append text to a file.

How to: Open and Append to a Log File

File.AppendText

FileInfo.AppendText

Rename or move a file.

File.Move

FileInfo.MoveTo

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1

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