FileSystemInfo Třída

Definice

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

Dědičnost

Object

FileSystemInfo

Dědičnost

Object

MarshalByRefObject

FileSystemInfo

Odvozené

System.IO.DirectoryInfo

System.IO.FileInfo

Atributy

SerializableAttribute ComVisibleAttribute

Implementuje

ISerializable

Příklady

Následující příklad ukazuje, jak procházet všechny soubory a adresáře a dotazovat se na některé informace o každé položce.

using namespace System;
using namespace System::IO;


namespace ConsoleApplication2
{
    public ref class Program
    {
    public:
        static void Main()
        {
            //  Loop through all the immediate subdirectories of C.
            for each (String^ entry in Directory::GetDirectories("C:\\"))
            {
                DisplayFileSystemInfoAttributes(gcnew DirectoryInfo(entry));
            }
            //  Loop through all the files in C.
            for each (String^ entry in Directory::GetFiles("C:\\"))
            {
                DisplayFileSystemInfoAttributes(gcnew 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);
        }
    };
};

int main()
{
    ConsoleApplication2::Program::Main();
}

 // 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

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

Poznámky

Třída FileSystemInfo obsahuje metody, které jsou společné pro manipulaci se soubory a adresáři. Objekt FileSystemInfo může představovat soubor nebo adresář, takže slouží jako základ pro FileInfo objekty nebo DirectoryInfo . Tuto základní třídu použijte při analýze velkého množství souborů a adresářů.

Odvozená třída může dědit z pouze v FileSystemInfo případě, že odvozená třída má oprávnění AllAccess z výčtu FileIOPermissionAccess .

Ve členech, kteří přijímají cestu, může cesta odkazovat na soubor nebo jenom adresář. Zadaná cesta může také odkazovat na relativní cestu nebo cestu UNC (Universal Naming Convention) pro název serveru a sdílené složky. Přijatelné jsou například všechny následující cesty:

• "c:\\MyDir\\MyFile.txt" v jazyce C# nebo "c:\MyDir\MyFile.txt" v jazyce Visual Basic.

• "c:\\MyDir" v jazyce C# nebo "c:\MyDir" v jazyce Visual Basic.

• "MyDir\\MySubdir" v jazyce C# nebo "MyDir\MySubDir" v jazyce Visual Basic.

• "\\\MyServer\\MyShare" v jazyce C# nebo "\\MyServer\MyShare" v jazyce Visual Basic.

Seznam běžných vstupně-výstupních úloh najdete v tématu Běžné vstupně-výstupní úlohy.

Konstruktory

Pole

Vlastnosti

Metody

Platí pro

Viz také

• FileSystemWatcher
• DriveInfo
• Vstupně-výstupní operace souborů a Stream
• Postupy: Čtení textu ze souboru
• Postupy: Zápis textu do souboru
• Postupy: Čtení a zápis do nově vytvořeného datového souboru