StorageFolder.DeleteAsync Method

Definition

Namespace:

Windows.Storage

Overloads

DeleteAsync()	Deletes the current folder.
DeleteAsync(StorageDeleteOption)	Deletes the current folder. This method also specifies whether to delete the folder permanently.

DeleteAsync()

Deletes the current folder.

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

Returns

IAsyncAction

No object or value is returned by this method when it completes.

Implements

DeleteAsync()

Attributes

OverloadAttribute RemoteAsyncAttribute

Exceptions

UnauthorizedAccessException

You don't have permission to delete the specified folder.

Examples

The following example shows how to delete the current folder by calling the DeleteAsync(StorageDeleteOption) overloaded method. This example explicitly specifies a value for option that deletes the file permanently.

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());
});

Remarks

This method implicitly uses StorageDeleteOption.Default to determine whether the item is deleted permanently.

See also

• DeleteAsync(StorageDeleteOption)

DeleteAsync(StorageDeleteOption)

Deletes the current folder. This method also specifies whether to delete the folder permanently.

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

Parameters

option

StorageDeleteOption

One of the enumeration values that specifies whether to delete the folder permanently.

Returns

IAsyncAction

No object or value is returned by this method when it completes.

Implements

DeleteAsync(StorageDeleteOption)

Attributes

OverloadAttribute RemoteAsyncAttribute

Exceptions

UnauthorizedAccessException

You don't have permission to delete the specified folder.

See also

• DeleteAsync()