FileSystem Class (Microsoft.VisualBasic.FileIO)

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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

FileSystem Class

Provides properties and methods for working with drives, files, and directories.

Namespace: Microsoft.VisualBasic.FileIO
Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

Syntax

Visual Basic (Declaration)

<HostProtectionAttribute(SecurityAction.LinkDemand, Resources := HostProtectionResource.ExternalProcessMgmt)> _
Public Class FileSystem

Visual Basic (Usage)

Dim instance As FileSystem

[HostProtectionAttribute(SecurityAction.LinkDemand, Resources = HostProtectionResource.ExternalProcessMgmt)]
public class FileSystem

Visual C++

[HostProtectionAttribute(SecurityAction::LinkDemand, Resources = HostProtectionResource::ExternalProcessMgmt)]
public ref class FileSystem

JScript

public class FileSystem

Remarks

Note:
The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: Resources. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

Note:

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: Resources. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

For more detailed information, see the Visual Basic topic My.Computer.FileSystem Object.

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

To	See
Read from a text file	How to: Read From Text Files in Visual Basic
Read from a delimited text file	How to: Read From Comma-Delimited Text Files in Visual Basic
Read from a fixed-width text file	How to: Read From Fixed-width Text Files in Visual Basic
Read from a text file with multiple formats	How to: Read From Text Files with Multiple Formats in Visual Basic
Read from a binary file	How to: Read From Binary Files in Visual Basic
Read from text files in the MyDocuments directory	How to: Read From Existing Text Files in My Documents (Visual Basic)
Read from a text file with a StreamReader	How to: Read Text from Files with a StreamReader (Visual Basic)
Write to a text file	How to: Write Text to Files in Visual Basic
Append to a text file	How to: Append to Text Files in Visual Basic
Write to a binary file	How to: Write to Binary Files in Visual Basic
Write to text files in the MyDocuments directory	How to: Write Text to Files in the My Documents Directory in Visual Basic
Write to a text file with a StreamWriter	How to: Write Text to Files with a StreamWriter in Visual Basic
Copy files with a specific pattern	How to: Copy Files with a Specific Pattern to a Directory in Visual Basic
Copy a file to the same directory	How to: Create a Copy of a File in the Same Directory in Visual Basic
Copy a file to a different directory	How to: Create a Copy of a File in a Different Directory in Visual Basic
Create a file	How to: Create a File in Visual Basic
Delete a file	How to: Delete a File in Visual Basic
Delete all the files in a directory	How to: Delete All Files in a Directory in Visual Basic
Find files with a specific pattern	How to: Find Files with a Specific Pattern in Visual Basic
Move a file	How to: Move a File in Visual Basic
Move a collection of files	How to: Move a Collection of Files in Visual Basic
Rename a file	How to: Rename a File in Visual Basic
Rename a directory	How to: Rename a Directory in Visual Basic
Copy a directory to another directory	How to: Copy a Directory to Another Directory in Visual Basic
Create a directory	How to: Create a Directory in Visual Basic
Delete a directory	How to: Delete a Directory in Visual Basic
Find subdirectories with a specific pattern	How to: Find Subdirectories with a Specific Pattern in Visual Basic
Get the collection of files in a directory	How to: Get the Collection of Files in a Directory in Visual Basic
Determine how many files are in a directory	How to: Determine How Many Files Are in a Directory in Visual Basic
Move a directory	How to: Move a Directory in Visual Basic
Move the contents of a directory	How to: Move the Contents of a Directory in Visual Basic
Read from the MyDocuments directory	How to: Retrieve the Contents of the My Documents Directory in Visual Basic
Parse a file path	How to: Parse File Paths in Visual Basic

Examples

This example checks to determine whether the folder C:\backup\logs exists and checks its properties.

Visual Basic

Dim logInfo As System.IO.DirectoryInfo
If My.Computer.FileSystem.DirectoryExists("C:\backup\logs") Then
    logInfo = My.Computer.FileSystem.GetDirectoryInfo _
    ("C:\backup\logs")
End If

Inheritance Hierarchy

System..::.Object
Microsoft.VisualBasic.FileIO..::.FileSystem

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0

Reference

FileSystem Members

Microsoft.VisualBasic.FileIO Namespace

Microsoft.VisualBasic.FileIO..::.FileSystem

Other Resources

My.Computer.FileSystem Object

My.Computer.FileSystem Object Members

My.Computer.FileSystem.SpecialDirectories Object

My.Computer Object