Procedimiento para eliminar archivos y directorios en almacenamiento aislado

  • Artículo

Puede eliminar directorios y archivos en un archivo de almacenamiento aislado. Dentro de un almacén, los nombres de archivos y directorios dependen del sistema operativo y se especifican con respecto a la raíz del sistema de archivos virtual. No distinguen mayúsculas de minúsculas en sistemas operativos Windows.

La clase System.IO.IsolatedStorage.IsolatedStorageFile proporciona dos métodos para eliminar directorios y archivos: DeleteDirectory y DeleteFile. Se genera una excepción IsolatedStorageException si trata de eliminar un archivo o directorio que no existe. Si incluye un carácter comodín en el nombre, DeleteDirectory produce una excepción IsolatedStorageException y DeleteFile produce una excepción ArgumentException.

El método DeleteDirectory produce un error si el directorio contiene archivos o subdirectorios. Puede usar los métodos GetFileNames y GetDirectoryNames para recuperar los archivos y directorios existentes. Para obtener información sobre cómo buscar en el sistema de archivos virtual de un almacén, vea Cómo: Buscar archivos y directorios existentes en almacenamiento aislado.

Ejemplo

En el ejemplo de código siguiente se crean y luego se eliminan varios directorios y archivos.

using namespace System;
using namespace System::IO::IsolatedStorage;
using namespace System::IO;

public ref class DeletingFilesDirectories
{
public:
    static void Main()
    {
        // Get a new isolated store for this user domain and assembly.
        // Put the store into an isolatedStorageFile object.

        IsolatedStorageFile^ isoStore =  IsolatedStorageFile::GetStore(IsolatedStorageScope::User |
            IsolatedStorageScope::Domain | IsolatedStorageScope::Assembly, (Type ^)nullptr, (Type ^)nullptr);

        Console::WriteLine("Creating Directories:");

        // This code creates several different directories.

        isoStore->CreateDirectory("TopLevelDirectory");
        Console::WriteLine("TopLevelDirectory");
        isoStore->CreateDirectory("TopLevelDirectory/SecondLevel");
        Console::WriteLine("TopLevelDirectory/SecondLevel");

        // This code creates two new directories, one inside the other.

        isoStore->CreateDirectory("AnotherTopLevelDirectory/InsideDirectory");
        Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory");
        Console::WriteLine();

        // This code creates a few files and places them in the directories.

        Console::WriteLine("Creating Files:");

        // This file is placed in the root.

        IsolatedStorageFileStream^ isoStream1 = gcnew IsolatedStorageFileStream("InTheRoot.txt",
            FileMode::Create, isoStore);
        Console::WriteLine("InTheRoot.txt");

        isoStream1->Close();

        // This file is placed in the InsideDirectory.

        IsolatedStorageFileStream^ isoStream2 = gcnew IsolatedStorageFileStream(
            "AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt", FileMode::Create, isoStore);
        Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
        Console::WriteLine();

        isoStream2->Close();

        Console::WriteLine("Deleting File:");

        // This code deletes the HereIAm.txt file.
        isoStore->DeleteFile("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
        Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
        Console::WriteLine();

        Console::WriteLine("Deleting Directory:");

        // This code deletes the InsideDirectory.

        isoStore->DeleteDirectory("AnotherTopLevelDirectory/InsideDirectory/");
        Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory/");
        Console::WriteLine();

    } // End of main.
};

int main()
{
    DeletingFilesDirectories::Main();
}

using System;
using System.IO.IsolatedStorage;
using System.IO;

public class DeletingFilesDirectories
{
    public static void Main()
    {
        // Get a new isolated store for this user domain and assembly.
        // Put the store into an isolatedStorageFile object.

        IsolatedStorageFile isoStore =  IsolatedStorageFile.GetStore(IsolatedStorageScope.User |
            IsolatedStorageScope.Domain | IsolatedStorageScope.Assembly, null, null);

        Console.WriteLine("Creating Directories:");

        // This code creates several different directories.

        isoStore.CreateDirectory("TopLevelDirectory");
        Console.WriteLine("TopLevelDirectory");
        isoStore.CreateDirectory("TopLevelDirectory/SecondLevel");
        Console.WriteLine("TopLevelDirectory/SecondLevel");

        // This code creates two new directories, one inside the other.

        isoStore.CreateDirectory("AnotherTopLevelDirectory/InsideDirectory");
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory");
        Console.WriteLine();

        // This code creates a few files and places them in the directories.

        Console.WriteLine("Creating Files:");

        // This file is placed in the root.

        IsolatedStorageFileStream isoStream1 = new IsolatedStorageFileStream("InTheRoot.txt",
            FileMode.Create, isoStore);
        Console.WriteLine("InTheRoot.txt");

        isoStream1.Close();

        // This file is placed in the InsideDirectory.

        IsolatedStorageFileStream isoStream2 = new IsolatedStorageFileStream(
            "AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt", FileMode.Create, isoStore);
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
        Console.WriteLine();

        isoStream2.Close();

        Console.WriteLine("Deleting File:");

        // This code deletes the HereIAm.txt file.
        isoStore.DeleteFile("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
        Console.WriteLine();

        Console.WriteLine("Deleting Directory:");

        // This code deletes the InsideDirectory.

        isoStore.DeleteDirectory("AnotherTopLevelDirectory/InsideDirectory/");
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/");
        Console.WriteLine();
    } // End of main.
}

Imports System.IO.IsolatedStorage
Imports System.IO

Public Class DeletingFilesDirectories
    Public Shared Sub Main()
        ' Get a new isolated store for this user domain and assembly.
        ' Put the store into an isolatedStorageFile object.

        Dim isoStore As IsolatedStorageFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User Or
            IsolatedStorageScope.Domain Or IsolatedStorageScope.Assembly, Nothing, Nothing)

        Console.WriteLine("Creating Directories:")

        ' This code creates several different directories.

        isoStore.CreateDirectory("TopLevelDirectory")
        Console.WriteLine("TopLevelDirectory")
        isoStore.CreateDirectory("TopLevelDirectory/SecondLevel")
        Console.WriteLine("TopLevelDirectory/SecondLevel")

        ' This code creates two new directories, one inside the other.

        isoStore.CreateDirectory("AnotherTopLevelDirectory/InsideDirectory")
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory")
        Console.WriteLine()

        ' This code creates a few files and places them in the directories.

        Console.WriteLine("Creating Files:")

        ' This file is placed in the root.

        Dim isoStream1 As New IsolatedStorageFileStream("InTheRoot.txt", FileMode.Create, isoStore)
        Console.WriteLine("InTheRoot.txt")

        isoStream1.Close()

        ' This file is placed in the InsideDirectory.

        Dim isoStream2 As New IsolatedStorageFileStream(
            "AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt", FileMode.Create, isoStore)
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt")
        Console.WriteLine()

        isoStream2.Close()

        Console.WriteLine("Deleting File:")

        ' This code deletes the HereIAm.txt file.
        isoStore.DeleteFile("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt")
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt")
        Console.WriteLine()

        Console.WriteLine("Deleting Directory:")

        ' This code deletes the InsideDirectory.

        isoStore.DeleteDirectory("AnotherTopLevelDirectory/InsideDirectory/")
        Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/")
        Console.WriteLine()

    End Sub
End Class

Vea también