StorageFile.CopyAsync Método

public:
 virtual IAsyncOperation<StorageFile ^> ^ CopyAsync(IStorageFolder ^ destinationFolder) = CopyAsync;

/// [Windows.Foundation.Metadata.Overload("CopyOverloadDefaultNameAndOptions")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFile> CopyAsync(IStorageFolder const& destinationFolder);

[Windows.Foundation.Metadata.Overload("CopyOverloadDefaultNameAndOptions")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFile> CopyAsync(IStorageFolder destinationFolder);

function copyAsync(destinationFolder)

Public Function CopyAsync (destinationFolder As IStorageFolder) As IAsyncOperation(Of StorageFile)

Parámetros

Devoluciones

Cuando se completa este método, devuelve un objeto StorageFile que representa la copia del archivo creado en destinationFolder.

Implementaciones

Atributos

OverloadAttribute RemoteAsyncAttribute

Excepciones

Ejemplos

En el ejemplo siguiente se copia un archivo en la carpeta especificada y se cambia el nombre de la copia llamando al método CopyAsync(IStorageFolder, String, NameCollisionOption). En este ejemplo se especifica explícitamente un valor para la opción que reemplaza el archivo en la carpeta de destino si ya existe un archivo con el nombre especificado.

using Windows.Storage;
using System.Threading.Tasks;

// Get the app's temporary folder.
StorageFolder tempFolder = ApplicationData.Current.TemporaryFolder;

// Create a sample file in the temporary folder.
string newFileName = "test.txt";
StorageFile newFile = await tempFolder.CreateFileAsync(newFileName);

// Get the app's local folder to use as the destination folder.
StorageFolder localFolder = ApplicationData.Current.LocalFolder;

// Specify a new name for the copied file.
string renamedFileName = "renamed_test.txt";

// Copy the file to the destination folder and rename it.
// Replace the existing file if the file already exists.
StorageFile copiedFile = await newFile.CopyAsync(localFolder, renamedFileName, NameCollisionOption.ReplaceExisting);

IAsyncAction MainPage::CopyFileAsync()
{
    // Get the app's temporary folder.
    StorageFolder sourceFolder{ ApplicationData::Current().TemporaryFolder() };
    StorageFolder targetFolder{ ApplicationData::Current().LocalFolder() };

    // Choose source file name and new name for the copied file.
    std::wstring newFileName{ L"test.txt" };
    std::wstring copyFileName{ L"renamed_test.txt" };

    // Create a sample file in the temporary folder.
    StorageFile sourceFile{ co_await sourceFolder.CreateFileAsync(newFileName, Windows::Storage::CreationCollisionOption::ReplaceExisting) };
    // Overwrite any existing file with the same name.
    StorageFile copiedFile{ co_await sourceFile.CopyAsync(targetFolder, copyFileName, Windows::Storage::NameCollisionOption::ReplaceExisting) };
    // Do something with copied file.
}

//Get the app's temporary folder
StorageFolder^ sourceFolder = ApplicationData::Current->TemporaryFolder;
StorageFolder^ targetFolder = ApplicationData::Current->LocalFolder;

// Choose source file name and new name for the copied file
String^ newFileName = "test.txt";
String^ copyFileName = "renamed_test.txt";

//Create a sample file in the temporary folder
auto copyFileTask = create_task(sourceFolder->CreateFileAsync(newFileName, Windows::Storage::CreationCollisionOption::ReplaceExisting)).then
([targetFolder, copyFileName](StorageFile^ sourceFile) -> task<StorageFile^>
{
    //Overwrite any existing file with the same name 
    auto copyFileTask = sourceFile->CopyAsync(targetFolder, copyFileName, Windows::Storage::NameCollisionOption::ReplaceExisting);
    return create_task(copyFileTask);
}).then([](StorageFile^ copiedFile) {
    //do something with copied file
});

Comentarios

Este método usa el valor FailIfExists de la enumeración CreationCollisionOption de forma predeterminada. Es decir, este método genera una excepción si ya existe un archivo con el mismo nombre en la carpeta de destino. Si desea controlar una colisión de nombres de archivo de otra manera, llame al método sobrecargado CopyAsync(IStorageFolder, String, NameCollisionOption).

Consulte también

• CopyAsync(IStorageFolder, String)
• CopyAsync(IStorageFolder, String, NameCollisionOption)

public:
 virtual IAsyncOperation<StorageFile ^> ^ CopyAsync(IStorageFolder ^ destinationFolder, Platform::String ^ desiredNewName) = CopyAsync;

/// [Windows.Foundation.Metadata.Overload("CopyOverloadDefaultOptions")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFile> CopyAsync(IStorageFolder const& destinationFolder, winrt::hstring const& desiredNewName);

[Windows.Foundation.Metadata.Overload("CopyOverloadDefaultOptions")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFile> CopyAsync(IStorageFolder destinationFolder, string desiredNewName);

function copyAsync(destinationFolder, desiredNewName)

Public Function CopyAsync (destinationFolder As IStorageFolder, desiredNewName As String) As IAsyncOperation(Of StorageFile)

Parámetros

Devoluciones

Cuando se completa este método, devuelve un objeto StorageFile que representa la copia del archivo creado en destinationFolder.

Implementaciones

Atributos

OverloadAttribute RemoteAsyncAttribute

Excepciones

Consulte también

• CopyAsync(IStorageFolder)
• CopyAsync(IStorageFolder, String, NameCollisionOption)

public:
 virtual IAsyncOperation<StorageFile ^> ^ CopyAsync(IStorageFolder ^ destinationFolder, Platform::String ^ desiredNewName, NameCollisionOption option) = CopyAsync;

/// [Windows.Foundation.Metadata.Overload("CopyOverload")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFile> CopyAsync(IStorageFolder const& destinationFolder, winrt::hstring const& desiredNewName, NameCollisionOption const& option);

[Windows.Foundation.Metadata.Overload("CopyOverload")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFile> CopyAsync(IStorageFolder destinationFolder, string desiredNewName, NameCollisionOption option);

function copyAsync(destinationFolder, desiredNewName, option)

Public Function CopyAsync (destinationFolder As IStorageFolder, desiredNewName As String, option As NameCollisionOption) As IAsyncOperation(Of StorageFile)

Parámetros

Devoluciones

Cuando se completa este método, devuelve un objeto StorageFile que representa la copia del archivo creado en destinationFolder.

Implementaciones

Atributos

OverloadAttribute RemoteAsyncAttribute

Excepciones

Consulte también

• CopyAsync(IStorageFolder)
• CopyAsync(IStorageFolder, String)