My.Computer.FileSystem.GetDirectoryInfo Method

Artikel
11/16/2012

Returns a DirectoryInfo object for the specified path.

' Usage
Dim value As System.IO.DirectoryInfo = My.Computer.FileSystem.GetDirectoryInfo(directory)
' Declaration
Public Function GetDirectoryInfo( _
   ByVal directory As String _
) As System.IO.DirectoryInfo

Parameters

directory
String. Path of directory. Required.

Return Value

DirectoryInfo

Exceptions

The following conditions may cause an exception:

The directory path is not valid for one of the following reasons: it is a zero-length string; it contains only white space; it contains invalid characters; or it is a device path (starts with \\.\) (ArgumentException).
The directory path is not valid because it is Nothing (ArgumentNullException).
The directory path exceeds the system-defined maximum length (PathTooLongException).
A file or directory name in the directory path contains a colon (:) or is in an invalid format (NotSupportedException).
The user lacks necessary permissions to view the directory path (SecurityException).

Remarks

If the directory does not exist, an exception is not thrown until the first time a property on the DirectoryInfo object is accessed.

Tasks

The following table lists examples of tasks involving the My.Computer.FileSystem.GetDirectoryInfo method.

To	See
Determine when a directory was created	How to: Determine a Directory's Creation Time in Visual Basic
Determine whether a directory is read-only	How to: Determine if a Directory is Read-Only in Visual Basic

Example

This example gets a DirectoryInfo object for the directory C:\Documents and Settings and displays the directory's creation time, last access time, and last write time.

Dim getInfo As System.IO.DirectoryInfo
getInfo = My.Computer.FileSystem.GetDirectoryInfo _
(My.Computer.FileSystem.SpecialDirectories.MyDocuments)
MsgBox("The directory was created at " & getInfo.CreationTime)
MsgBox("The directory was last accessed at " & getInfo.LastAccessTime)
MsgBox("The directory was last written to at " & getInfo.LastWriteTime)

Requirements

Namespace:Microsoft.VisualBasic.MyServices

Class:FileSystemProxy (provides access to FileSystem)

Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)

Availability by Project Type

Project type	Available
Windows Application	Yes
Class Library	Yes
Console Application	Yes
Windows Control Library	Yes
Web Control Library	Yes
Windows Service	Yes
Web Site	Yes

Permissions

The following permission may be necessary:

Permission	Description
FileIOPermission	Controls the ability to access files and folders. Associated enumeration: Unrestricted.

For more information, see Code Access Security and Requesting Permissions.

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