StorageFolder.DeleteAsync Método

Definición

Espacio de nombres:

Windows.Storage

Sobrecargas

DeleteAsync()	Elimina la carpeta actual.
DeleteAsync(StorageDeleteOption)	Elimina la carpeta actual. Este método también especifica si se va a eliminar la carpeta de forma permanente.

DeleteAsync()

Elimina la carpeta actual.

public:
 virtual IAsyncAction ^ DeleteAsync() = DeleteAsync;

/// [Windows.Foundation.Metadata.Overload("DeleteAsyncOverloadDefaultOptions")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncAction DeleteAsync();

[Windows.Foundation.Metadata.Overload("DeleteAsyncOverloadDefaultOptions")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncAction DeleteAsync();

function deleteAsync()

Public Function DeleteAsync () As IAsyncAction

Devoluciones

IAsyncAction

Este método no devuelve ningún objeto o valor cuando se completa.

Implementaciones

DeleteAsync()

Atributos

OverloadAttribute RemoteAsyncAttribute

Excepciones

UnauthorizedAccessException

No tiene permiso para eliminar la carpeta especificada.

Ejemplos

En el ejemplo siguiente se muestra cómo eliminar la carpeta actual mediante una llamada al método sobrecargado DeleteAsync(StorageDeleteOption). En este ejemplo se especifica explícitamente un valor para la opción que elimina el archivo de forma permanente.

using Windows.Storage;
using System.Threading.Tasks;
using System.Diagnostics; // For writing results to Output window.

// Get the app's local folder.
StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;

// Create a temporary folder in the current folder.
string folderName = "Test";
StorageFolder testFolder = await localFolder.CreateFolderAsync(folderName);

// Has the folder been created?
if(await localFolder.TryGetItemAsync(folderName) != null)
    Debug.WriteLine("Folder " + folderName + " exists.");
else
    Debug.WriteLine("Folder " + folderName + " does not exist.");

// Delete the folder permanently.
await testFolder.DeleteAsync(StorageDeleteOption.PermanentDelete);

// Has the folder been deleted?
if(await localFolder.TryGetItemAsync(folderName) != null)
    Debug.WriteLine("Folder " + folderName + " exists.");
else
    Debug.WriteLine("Folder " + folderName + " does not exist.");

IAsyncAction MainPage::ExampleCoroutineAsync()
{
    Windows::Storage::StorageFolder localFolder{ Windows::Storage::ApplicationData::Current().LocalFolder() };

    std::wstring folderName{ L"test" };

    Windows::Storage::StorageFolder newFolder{ co_await localFolder.CreateFolderAsync(folderName) };

    {
        // Check that the folder exists.
        Windows::Storage::IStorageItem newItem{ co_await localFolder.TryGetItemAsync(folderName) };
        std::wstringstream stringstream;
        stringstream << L"Folder: " << folderName.c_str();
        if (newItem)
        {
            stringstream << L" created" << std::endl;
        }
        else
        {
            stringstream << L" not found" << std::endl;
        }
        ::OutputDebugString(stringstream.str().c_str());
    }

    co_await newFolder.DeleteAsync(Windows::Storage::StorageDeleteOption::PermanentDelete);

    {
        // Check that the folder has been deleted.
        Windows::Storage::IStorageItem newItem{ co_await localFolder.TryGetItemAsync(folderName) };
        std::wstringstream stringstream;
        stringstream << L"Folder: " << folderName.c_str();
        if (newItem)
        {
            stringstream << L" not deleted" << std::endl;
        }
        else
        {
            stringstream << L" deleted" << std::endl;
        }
        ::OutputDebugString(stringstream.str().c_str());
    }
}

StorageFolder^ localFolder = ApplicationData::Current->LocalFolder;

String^ folderName = "test";

create_task(localFolder->CreateFolderAsync(folderName)).then([=](StorageFolder^ newFolder) -> task<IStorageItem^> {
    //Check the folder exists
    return create_task(localFolder->TryGetItemAsync(folderName));
}).then([=](IStorageItem^ newFolder) -> task<void> {
    String^ output = "";
    if (newFolder == nullptr)
    {
        output = "Folder: " + folderName + " not found\n";
    }
    else
    {
        output = "Folder: " + folderName + " created\n";
    }
    OutputDebugString(output->Begin());
    return create_task(newFolder->DeleteAsync(StorageDeleteOption::PermanentDelete));
}).then([=]() -> task<IStorageItem^> {
    return create_task(localFolder->TryGetItemAsync(folderName));
}).then([=](IStorageItem^ newFolder) {
    String^ output = "";
    if (newFolder == nullptr)
    {
        output = "Folder: " + folderName + " deleted\n";
    }
    else
    {
        output = "Folder: " + folderName + " not deleted\n";
    }
    OutputDebugString(output->Begin());
});

Comentarios

Este método usa implícitamente StorageDeleteOption.Default para determinar si el elemento se elimina permanentemente.

Consulte también

• DeleteAsync(StorageDeleteOption)

DeleteAsync(StorageDeleteOption)

Elimina la carpeta actual. Este método también especifica si se va a eliminar la carpeta de forma permanente.

public:
 virtual IAsyncAction ^ DeleteAsync(StorageDeleteOption option) = DeleteAsync;

/// [Windows.Foundation.Metadata.Overload("DeleteAsync")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncAction DeleteAsync(StorageDeleteOption const& option);

[Windows.Foundation.Metadata.Overload("DeleteAsync")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncAction DeleteAsync(StorageDeleteOption option);

function deleteAsync(option)

Public Function DeleteAsync (option As StorageDeleteOption) As IAsyncAction

Parámetros

option

StorageDeleteOption

Uno de los valores de enumeración que especifica si se va a eliminar la carpeta de forma permanente.

Devoluciones

IAsyncAction

Este método no devuelve ningún objeto o valor cuando se completa.

Implementaciones

DeleteAsync(StorageDeleteOption)

Atributos

OverloadAttribute RemoteAsyncAttribute

Excepciones

UnauthorizedAccessException

No tiene permiso para eliminar la carpeta especificada.

Consulte también

• DeleteAsync()