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11/18/2011

File.GetLastAccessTime Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

When it is called by trusted applications, returns the date and time the specified file or directory was last accessed.

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

Syntax

'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function GetLastAccessTime ( _
    path As String _
) As DateTime

[SecuritySafeCriticalAttribute]
public static DateTime GetLastAccessTime(
    string path
)

Parameters

path
Type: System.String
The file or directory for which to obtain access date and time information.

Return Value

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

Exceptions

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 GetInvalidPathChars.
ArgumentNullException	path is nulla 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.
NotSupportedException	path is in an invalid format.

Remarks

For more information about trusted applications, see Trusted Applications.

Platform Notes

Silverlight for Windows Phone

This member has a SecurityCriticalAttribute attribute on Silverlight for Windows Phone, because the attribute was present in Silverlight 3. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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