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.NET Framework Class Library
Directory Class

Exposes static methods for creating, moving, and enumerating through directories and subdirectories. This class cannot be inherited.

To browse the .NET Framework source code for this type, see the Reference Source.

Inheritance Hierarchy
SystemObject
  System.IODirectory

Namespace:   System.IO
Assembly:  mscorlib (in mscorlib.dll)
Syntax
<[%$TOPIC/wa70yfe2_en-us_VS_110_3_0_0_0_0%](True)> _
Public NotInheritable Class Directory
[[%$TOPIC/wa70yfe2_en-us_VS_110_3_0_1_0_0%](true)]
public static class Directory
[[%$TOPIC/wa70yfe2_en-us_VS_110_3_0_2_0_0%](true)]
public ref class Directory abstract sealed
[<[%$TOPIC/wa70yfe2_en-us_VS_110_3_0_3_0_0%]>]
[<[%$TOPIC/wa70yfe2_en-us_VS_110_3_0_3_0_1%]>]
[<[%$TOPIC/wa70yfe2_en-us_VS_110_3_0_3_0_2%](true)>]
type Directory =  class end
public final class Directory

The Directory type exposes the following members.

Methods
  NameDescription
Public method Static member Supported by the XNA Framework CreateDirectory(String)Creates all directories and subdirectories in the specified path unless they already exist.
Public method Static member CreateDirectory(String, DirectorySecurity)Creates all the directories in the specified path, unless the already exist, applying the specified Windows security.
Public method Static member Supported by the XNA Framework Delete(String)Deletes an empty directory from a specified path.
Public method Static member Supported by the XNA Framework Delete(String, Boolean)Deletes the specified directory and, if indicated, any subdirectories and files in the directory.
Public method Static member EnumerateDirectories(String)Returns an enumerable collection of directory names in a specified path.
Public method Static member EnumerateDirectories(String, String)Returns an enumerable collection of directory names that match a search pattern in a specified path.
Public method Static member EnumerateDirectories(String, String, SearchOption)Returns an enumerable collection of directory names that match a search pattern in a specified path, and optionally searches subdirectories.
Public method Static member EnumerateFiles(String)Returns an enumerable collection of file names in a specified path.
Public method Static member EnumerateFiles(String, String)Returns an enumerable collection of file names that match a search pattern in a specified path.
Public method Static member EnumerateFiles(String, String, SearchOption)Returns an enumerable collection of file names that match a search pattern in a specified path, and optionally searches subdirectories.
Public method Static member EnumerateFileSystemEntries(String)Returns an enumerable collection of file names and directory names in a specified path.
Public method Static member EnumerateFileSystemEntries(String, String)Returns an enumerable collection of file names and directory names that match a search pattern in a specified path.
Public method Static member EnumerateFileSystemEntries(String, String, SearchOption)Returns an enumerable collection of file names and directory names that match a search pattern in a specified path, and optionally searches subdirectories.
Public method Static member Supported by the XNA Framework ExistsDetermines whether the given path refers to an existing directory on disk.
Public method Static member GetAccessControl(String)Gets a DirectorySecurity object that encapsulates the access control list (ACL) entries for a specified directory.
Public method Static member GetAccessControl(String, AccessControlSections)Gets a DirectorySecurity object that encapsulates the specified type of access control list (ACL) entries for a specified directory.
Public method Static member Supported by the XNA Framework GetCreationTimeGets the creation date and time of a directory.
Public method Static member GetCreationTimeUtcGets the creation date and time, in Coordinated Universal Time (UTC) format, of a directory.
Public method Static member Supported by the XNA Framework GetCurrentDirectoryGets the current working directory of the application.
Public method Static member Supported by the XNA Framework GetDirectories(String)Returns the names of subdirectories (including their paths) in the specified directory.
Public method Static member Supported by the XNA Framework GetDirectories(String, String)Returns the names of subdirectories (including their paths) that match the specified search pattern in the specified directory.
Public method Static member GetDirectories(String, String, SearchOption)Returns the names of the subdirectories (including their paths) that match the specified search pattern in the specified directory, and optionally searches subdirectories.
Public method Static member Supported by the XNA Framework GetDirectoryRootReturns the volume information, root information, or both for the specified path.
Public method Static member Supported by the XNA Framework GetFiles(String)Returns the names of files (including their paths) in the specified directory.
Public method Static member Supported by the XNA Framework GetFiles(String, String)Returns the names of files (including their paths) that match the specified search pattern in the specified directory.
Public method Static member GetFiles(String, String, SearchOption)Returns the names of files (including their paths) that match the specified search pattern in the specified directory, using a value to determine whether to search subdirectories.
Public method Static member Supported by the XNA Framework GetFileSystemEntries(String)Returns the names of all files and subdirectories in a specified path.
Public method Static member Supported by the XNA Framework GetFileSystemEntries(String, String)Returns an array of file names and directory names that that match a search pattern in a specified path.
Public method Static member GetFileSystemEntries(String, String, SearchOption)Returns an array of all the file names and directory names that match a search pattern in a specified path, and optionally searches subdirectories.
Public method Static member Supported by the XNA Framework GetLastAccessTimeReturns the date and time the specified file or directory was last accessed.
Public method Static member GetLastAccessTimeUtcReturns the date and time, in Coordinated Universal Time (UTC) format, that the specified file or directory was last accessed.
Public method Static member Supported by the XNA Framework GetLastWriteTimeReturns the date and time the specified file or directory was last written to.
Public method Static member GetLastWriteTimeUtcReturns the date and time, in Coordinated Universal Time (UTC) format, that the specified file or directory was last written to.
Public method Static member GetLogicalDrivesRetrieves the names of the logical drives on this computer in the form "<drive letter>:\".
Public method Static member GetParentRetrieves the parent directory of the specified path, including both absolute and relative paths.
Public method Static member Supported by the XNA Framework MoveMoves a file or a directory and its contents to a new location.
Public method Static member SetAccessControlApplies access control list (ACL) entries described by a DirectorySecurity object to the specified directory.
Public method Static member SetCreationTimeSets the creation date and time for the specified file or directory.
Public method Static member SetCreationTimeUtcSets the creation date and time, in Coordinated Universal Time (UTC) format, for the specified file or directory.
Public method Static member Supported by the XNA Framework SetCurrentDirectorySets the application's current working directory to the specified directory.
Public method Static member SetLastAccessTimeSets the date and time the specified file or directory was last accessed.
Public method Static member SetLastAccessTimeUtcSets the date and time, in Coordinated Universal Time (UTC) format, that the specified file or directory was last accessed.
Public method Static member SetLastWriteTimeSets the date and time a directory was last written to.
Public method Static member SetLastWriteTimeUtcSets the date and time, in Coordinated Universal Time (UTC) format, that a directory was last written to.
Top
Remarks
NoteNote

To view the .NET Framework source code for this type, see the Reference Source. You can browse through the source code online, download the reference for offline viewing, and step through the sources (including patches and updates) during debugging; see instructions.

Use the Directory class for typical operations such as copying, moving, renaming, creating, and deleting directories.

The static methods of the Directory class perform security checks on all methods. If you are going to reuse an object several times, consider using the corresponding instance method of DirectoryInfo instead, because the security check will not always be necessary.

If you are performing only one directory-related action, it might be more efficient to use a static Directory method rather than a corresponding DirectoryInfo instance method. Most Directory methods require the path to the directory that you are manipulating.

NoteNote

In members that accept a string path parameter, that path must be well-formed or an exception is raised. For example, if a path is fully qualified but begins with a space (" c:\temp"), the path string isn't trimmed, so the path is considered malformed and an exception is raised. In addition, a path or a combination of paths cannot be fully qualified twice. For example, "c:\temp c:\windows" also raises an exception. Ensure that your paths are well-formed when using methods that accept a path string. For more information see Path.

In members that accept a path, the path can refer to a file or a directory. You can use a full path, a relative path, or a Universal Naming Convention (UNC) path for a server and share name. For example, all the following are acceptable paths:

  • "c:\\MyDir" in C#, or "c:\MyDir" in Visual Basic.

  • "MyDir\\MySubdir" in C#, or "MyDir\MySubDir" in Visual Basic.

  • "\\\\MyServer\\MyShare" in C#, or "\\MyServer\MyShare" in Visual Basic.

By default, full read/write access to new directories is granted to all users. However, the app must have the correct security to access existing directories.

To demand permissions for a directory and all its subdirectories, end the path string with the directory separator character. (For example, "C:\Temp\" grants access to C:\Temp\ and all its subdirectories.) To demand permissions only for a specific directory, end the path string with a period. (For example, "C:\Temp\." grants access only to C:\Temp\, not to its subdirectories.)

In members that accept a searchPattern parameter, the search string can be any combination of literal characters and two wildcard characters; * and ?. This parameter does not recognize regular expressions. For more information, see the EnumerateDirectories(String, String) method or any other method that uses the searchPattern parameter.

For a list of common I/O tasks, see Common I/O Tasks.

Directory and DirectoryInfo are not supported for use in Windows Store apps. For information about how to access files and folders in Windows Store apps, see Accessing data and files (Windows Store apps).

Examples

The following example shows how to retrieve all the text files from a directory and move them to a new directory. After the files are moved, they no longer exist in the original directory.

Imports System.IO

Module Module1

    Sub Main()
        Dim sourceDirectory As String = "C:\current" 
        Dim archiveDirectory As String = "C:\archive" 

        Try 
            Dim txtFiles = Directory.EnumerateFiles(sourceDirectory, "*.txt")

            For Each currentFile As String In txtFiles
                Dim fileName = currentFile.Substring(sourceDirectory.Length + 1)
                Directory.Move(currentFile, Path.Combine(archiveDirectory, fileName))
            Next 
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try 
    End Sub 

End Module
using System;
using System.IO;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            string sourceDirectory = @"C:\current";
            string archiveDirectory = @"C:\archive";

            try
            {
                var txtFiles = Directory.EnumerateFiles(sourceDirectory, "*.txt");

                foreach (string currentFile in txtFiles)
                {
                    string fileName = currentFile.Substring(sourceDirectory.Length + 1);
                    Directory.Move(currentFile, Path.Combine(archiveDirectory, fileName));
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
}

The following example demonstrates how to use the EnumerateFiles method to retrieve a collection of text files from a directory, and then use that collection in a query to find all the lines that contain "Example".

Imports System.IO

Module Module1

    Sub Main()
        Dim archiveDirectory As String = "C:\archive" 

        Dim files = From retrievedFile In Directory.EnumerateFiles(archiveDirectory, "*.txt", SearchOption.AllDirectories)
                    From line In File.ReadLines(retrievedFile)
                    Where line.Contains("Example")
                    Select New With {.curFile = retrievedFile, .curLine = line}

        For Each f In files
            Console.WriteLine("{0} contains {1}", f.curFile, f.curLine)
        Next
        Console.WriteLine("{0} lines found.", files.Count.ToString())

    End Sub 

End Module
using System;
using System.IO;
using System.Linq;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            string archiveDirectory = @"C:\archive";

            var files = from retrievedFile in Directory.EnumerateFiles(archiveDirectory, "*.txt", SearchOption.AllDirectories)
                        from line in File.ReadLines(retrievedFile)
                        where line.Contains("Example")
                        select new
                        {
                            File = retrievedFile,
                            Line = line
                        };

            foreach (var f in files)
            {
                Console.WriteLine("{0} contains {1}", f.File, f.Line);
            }
            Console.WriteLine("{0} lines found.", files.Count().ToString());
        }
    }
}

The following example demonstrates how to move a directory and all its files to a new directory. The original directory no longer exists after it has been moved.

Imports System.IO

Module Module1

    Sub Main()
        Dim sourceDirectory As String = "C:\source" 
        Dim destinationDirectory As String = "C:\destination" 

        Try
            Directory.Move(sourceDirectory, destinationDirectory)
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try 

    End Sub 

End Module
using System;
using System.IO;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            string sourceDirectory = @"C:\source";
            string destinationDirectory = @"C:\destination";

            try
            {
                Directory.Move(sourceDirectory, destinationDirectory);  
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
}
Version Information

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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.