Directory.GetDirectories メソッド (String)

指定したディレクトリ内のサブディレクトリの名前を取得します。

Overloads Public Shared Function GetDirectories( _
   ByVal path As String _) As String()
[C#]
public static string[] GetDirectories(stringpath);
[C++]
public: static String* GetDirectories(String* path)  __gc[];
[JScript]
public static function GetDirectories(
   path : String) : String[];

パラメータ

• path
  サブディレクトリ名の配列が返されるパス。

戻り値

path 内のサブディレクトリの名前を格納している String 型の配列。

例外

解説

path パラメータは、相対パス情報または絶対パス情報を指定することを許可されています。相対パス情報は、現在の作業ディレクトリに対して相対的に解釈されます。現在の作業ディレクトリを取得するには、 GetCurrentDirectory のトピックを参照してください。

このメソッドは、検索パターンとしてアスタリスク (*) を指定した GetDirectories(String, String) とまったく同じです。

このメソッドで返される名前の先頭には、 path で提供されるディレクトリ情報が付きます。

path パラメータでは大文字と小文字が区別されません。

このメソッドの使用例については、以下の「使用例」を参照してください。その他の一般的な I/O タスクまたは関連する I/O タスクの例を次の表に示します。

使用例

ファイル名またはディレクトリ名の配列をコマンドラインから受け取り、名前の種類を判断し、適切な処理を行う例を次に示します。

 
' For Directory.GetFiles and Directory.GetDirectories
' For File.Exists, Directory.Exists 

Imports System
Imports System.IO
Imports System.Collections

Public Class RecursiveFileProcessor

    Public Overloads Shared Sub Main(ByVal args() As String)
        Dim path As String
        For Each path In args
            If File.Exists(path) Then
                ' This path is a file.
                ProcessFile(path)
            Else
                If Directory.Exists(path) Then
                    ' This path is a directory.
                    ProcessDirectory(path)
                Else
                    Console.WriteLine("{0} is not a valid file or directory.", path)
                End If
            End If
        Next path
    End Sub 'Main


    ' Process all files in the directory passed in, recurse on any directories 
    ' that are found, and process the files they contain.
    Public Shared Sub ProcessDirectory(ByVal targetDirectory As String)
        Dim fileEntries As String() = Directory.GetFiles(targetDirectory)
        ' Process the list of files found in the directory.
        Dim fileName As String
        For Each fileName In fileEntries
            ProcessFile(fileName)

        Next fileName
        Dim subdirectoryEntries As String() = Directory.GetDirectories(targetDirectory)
        ' Recurse into subdirectories of this directory.
        Dim subdirectory As String
        For Each subdirectory In subdirectoryEntries
            ProcessDirectory(subdirectory)
        Next subdirectory

    End Sub 'ProcessDirectory

    ' Insert logic for processing found files here.
    Public Shared Sub ProcessFile(ByVal path As String)
        Console.WriteLine("Processed file '{0}'.", path)
    End Sub 'ProcessFile
End Class 'RecursiveFileProcessor

[C#] 
// For Directory.GetFiles and Directory.GetDirectories
// For File.Exists, Directory.Exists
using System;
using System.IO;
using System.Collections;

public class RecursiveFileProcessor 
{
    public static void Main(string[] args) 
    {
        foreach(string path in args) 
        {
            if(File.Exists(path)) 
            {
                // This path is a file
                ProcessFile(path); 
            }               
            else if(Directory.Exists(path)) 
            {
                // This path is a directory
                ProcessDirectory(path);
            }
            else 
            {
                Console.WriteLine("{0} is not a valid file or directory.", path);
            }        
        }        
    }


    // Process all files in the directory passed in, recurse on any directories 
    // that are found, and process the files they contain.
    public static void ProcessDirectory(string targetDirectory) 
    {
        // Process the list of files found in the directory.
        string [] fileEntries = Directory.GetFiles(targetDirectory);
        foreach(string fileName in fileEntries)
            ProcessFile(fileName);

        // Recurse into subdirectories of this directory.
        string [] subdirectoryEntries = Directory.GetDirectories(targetDirectory);
        foreach(string subdirectory in subdirectoryEntries)
            ProcessDirectory(subdirectory);
    }
        
    // Insert logic for processing found files here.
    public static void ProcessFile(string path) 
    {
        Console.WriteLine("Processed file '{0}'.", path);        
    }
}

[C++] 
// For Directory::GetFiles and Directory::GetDirectories
// For File::Exists, Directory::Exists
#using <mscorlib.dll>

using namespace System;
using namespace System::IO;
using namespace System::Collections;

// Insert logic for processing found files here.
void ProcessFile(String* path) {
    Console::WriteLine(S"Processed file '{0}'.", path);        
}

// Process all files in the directory passed in, recurse on any directories 
// that are found, and process the files they contain.
void ProcessDirectory(String* targetDirectory) {
    // Process the list of files found in the directory.
    String* fileEntries[] = Directory::GetFiles(targetDirectory);
    IEnumerator* files = fileEntries->GetEnumerator();
    while (files->MoveNext()) {
        String* fileName = __try_cast<String*>(files->Current);
        ProcessFile(fileName);
    }

    // Recurse into subdirectories of this directory.
    String* subdirectoryEntries[] = Directory::GetDirectories(targetDirectory);
    IEnumerator* dirs = subdirectoryEntries->GetEnumerator();
    while (dirs->MoveNext()) {
        String* subdirectory = __try_cast<String*>(dirs->Current);
        ProcessDirectory(subdirectory);
    }
}

int main(int argc, char* argv[]) {
    for(int i=1; i < argc; i++) {
        String* path = argv[i];
        if (File::Exists(path)) {
            // This path is a file
            ProcessFile(path); 
        } else if (Directory::Exists(path)) {
            // This path is a directory
            ProcessDirectory(path);
        }else {
            Console::WriteLine(S"{0} is not a valid file or directory.", path);
        }
    }
}        

[JScript] 
//For Directory.GetFiles and Directory.GetDirectories
import System;
import System.IO;
import System.Collections;

// For File.Exists, Directory.Exists 
// Takes an array of file names or directory names on the command line.  
// Determines what kind of name it is and processes it appropriately
public class RecursiveFileProcessor {
    public static function Main(args : String[]) : void  {
        for(var i : int in args) {
            var path : String = args[i];
            if (File.Exists(path)) {
                // This path is a file
                ProcessFile(path); 
            }               
            else if(Directory.Exists(path)) {
                // This path is a directory
                ProcessDirectory(path);
            }
            else {
                Console.WriteLine("{0} is not a valid file or directory.", path);
            }        
        }        
    }


    // Process all files in the directory passed in, and recurse on any directories 
    // that are found to process the files they contain
    public static function ProcessDirectory(targetDirectory : String) : void  {
        // Process the list of files found in the directory
        var fileEntries : String [] = Directory.GetFiles(targetDirectory);
        for (var i : int in fileEntries)
            ProcessFile(fileEntries[i]);

        // Recurse into subdirectories of this directory
        var subdirectoryEntries : String[] = Directory.GetDirectories(targetDirectory);
        for (i in subdirectoryEntries)
            ProcessDirectory(subdirectoryEntries[i]);
    }
        
    // Real logic for processing found files would go here.
    public static function ProcessFile(path : String) : void  {
        Console.WriteLine("Processed file '{0}'.", path);        
    }
}

// For JScript there is no 'Main' routine defined and hence the command line arguments
// have to be obtained with a call to System.Environment.GetCommandLineArgs
RecursiveFileProcessor.Main(System.Environment.GetCommandLineArgs());

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET, Common Language Infrastructure (CLI) Standard

.NET Framework セキュリティ:

• FileIOPermission (現在のディレクトリのパス情報にアクセスするために必要な許可) FileIOPermissionAccess.PathDiscovery (関連する列挙体)

参照

Directory クラス | Directory メンバ | System.IO 名前空間 | Directory.GetDirectories オーバーロードの一覧 | 入出力操作 | ファイルからのテキストの読み取り | ファイルへのテキストの書き込み