FileSystemInfo Clase

Definición

public ref class FileSystemInfo abstract

public ref class FileSystemInfo abstract : MarshalByRefObject, System::Runtime::Serialization::ISerializable

public abstract class FileSystemInfo

public abstract class FileSystemInfo : MarshalByRefObject, System.Runtime.Serialization.ISerializable

[System.Serializable]
public abstract class FileSystemInfo : MarshalByRefObject, System.Runtime.Serialization.ISerializable

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class FileSystemInfo : MarshalByRefObject, System.Runtime.Serialization.ISerializable

type FileSystemInfo = class

type FileSystemInfo = class
    inherit MarshalByRefObject
    interface ISerializable

[<System.Serializable>]
type FileSystemInfo = class
    inherit MarshalByRefObject
    interface ISerializable

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type FileSystemInfo = class
    inherit MarshalByRefObject
    interface ISerializable

Public MustInherit Class FileSystemInfo

Public MustInherit Class FileSystemInfo
Inherits MarshalByRefObject
Implements ISerializable

Herencia

Object

FileSystemInfo

Herencia

Object

MarshalByRefObject

FileSystemInfo

Derivado

System.IO.DirectoryInfo

System.IO.FileInfo

Atributos

SerializableAttribute ComVisibleAttribute

Implementaciones

ISerializable

Ejemplos

En el ejemplo siguiente se muestra cómo recorrer en bucle todos los archivos y directorios, consultando información sobre cada entrada.

using System;
using System.IO;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            //  Loop through all the immediate subdirectories of C.
            foreach (string entry in Directory.GetDirectories(@"C:\"))
            {
                DisplayFileSystemInfoAttributes(new DirectoryInfo(entry));
            }
            //  Loop through all the files in C.
            foreach (string entry in Directory.GetFiles(@"C:\"))
            {
                DisplayFileSystemInfoAttributes(new FileInfo(entry));
            }
        }
        static void DisplayFileSystemInfoAttributes(FileSystemInfo fsi)
        {
            //  Assume that this entry is a file.
            string entryType = "File";

            // Determine if entry is really a directory
            if ((fsi.Attributes & FileAttributes.Directory) == FileAttributes.Directory )
            {
                entryType = "Directory";
            }
            //  Show this entry's type, name, and creation date.
            Console.WriteLine("{0} entry {1} was created on {2:D}", entryType, fsi.FullName, fsi.CreationTime);
        }
    }
}

 // Output will vary based on contents of drive C.

 // Directory entry C:\Documents and Settings was created on Tuesday, November 25, 2003
 // Directory entry C:\Inetpub was created on Monday, January 12, 2004
 // Directory entry C:\Program Files was created on Tuesday, November 25, 2003
 // Directory entry C:\RECYCLER was created on Tuesday, November 25, 2003
 // Directory entry C:\System Volume Information was created on Tuesday, November 2, 2003
 // Directory entry C:\WINDOWS was created on Tuesday, November 25, 2003
 // File entry C:\IO.SYS was created on Tuesday, November 25, 2003
 // File entry C:\MSDOS.SYS was created on Tuesday, November 25, 2003
 // File entry C:\pagefile.sys was created on Saturday, December 27, 2003

Imports System.IO
Module Module1

    Sub Main()
        ' Loop through all the immediate subdirectories of C.
        For Each entry As String In Directory.GetDirectories("C:\")
            DisplayFileSystemInfoAttributes(New DirectoryInfo(entry))
        Next

        ' Loop through all the files in C.
        For Each entry As String In Directory.GetFiles("C:\")
            DisplayFileSystemInfoAttributes(New FileInfo(entry))
        Next
    End Sub

    Sub DisplayFileSystemInfoAttributes(ByVal fsi As IO.FileSystemInfo)
        ' Assume that this entry is a file.
        Dim entryType As String = "File"

        ' Determine if this entry is really a directory.
        If (fsi.Attributes And FileAttributes.Directory) = FileAttributes.Directory Then
            entryType = "Directory"
        End If

        ' Show this entry's type, name, and creation date.
        Console.WriteLine("{0} entry {1} was created on {2:D}", _
            entryType, fsi.FullName, fsi.CreationTime)
    End Sub
End Module

' Output will vary based on contents of drive C.
' 
' Directory entry C:\Documents and Settings was created on Tuesday, November 25, 2003
' Directory entry C:\Inetpub was created on Monday, January 12, 2004
' Directory entry C:\Program Files was created on Tuesday, November 25, 2003
' Directory entry C:\RECYCLER was created on Tuesday, November 25, 2003
' Directory entry C:\System Volume Information was created on Tuesday, November 2, 2003
' Directory entry C:\WINDOWS was created on Tuesday, November 25, 2003
' File entry C:\IO.SYS was created on Tuesday, November 25, 2003
' File entry C:\MSDOS.SYS was created on Tuesday, November 25, 2003
' File entry C:\pagefile.sys was created on Saturday, December 27, 2003

Comentarios

La FileSystemInfo clase contiene métodos comunes a la manipulación de archivos y directorios. Un FileSystemInfo objeto puede representar un archivo o un directorio, por lo que actúa como base para FileInfo objetos o DirectoryInfo . Use esta clase base al analizar muchos archivos y directorios.

Una clase derivada solo puede heredar de FileSystemInfo si la clase derivada tiene el permiso AllAccess de la FileIOPermissionAccess enumeración.

En los miembros que aceptan una ruta de acceso, la ruta de acceso puede hacer referencia a un archivo o simplemente a un directorio. La ruta de acceso especificada también puede hacer referencia a una ruta de acceso relativa o a una ruta de acceso de convención de nomenclatura universal (UNC) para un servidor y un nombre de recurso compartido. Por ejemplo, todas las siguientes son rutas de acceso aceptables:

• "c:\\MyDir\\MyFile.txt" en C#, o "c:\MyDir\MyFile.txt" en Visual Basic.

• "c:\\MyDir" en C#, o "c:\MyDir" en Visual Basic.

• "MyDir\\MySubdir" en C#, o "MyDir\MySubDir" en Visual Basic.

• "\\\\MyServer\\MyShare" en C#, o "\\MyServer\MyShare" en Visual Basic.

Para obtener una lista de tareas comunes de E/S, consulte Tareas comunes de E/S.

Consulte también

• FileSystemWatcher
• DriveInfo
• E/S de archivos y secuencias
• Cómo: Leer texto de un archivo
• Cómo: Escribir texto en un archivo
• Cómo: Leer y escribir en un archivo de datos recién creado