StorageFolder.CreateFolderAsync Method

Definition

Namespace:

Windows.Storage

Overloads

CreateFolderAsync(String)	Creates a new subfolder with the specified name in the current folder.
CreateFolderAsync(String, CreationCollisionOption)	Creates a new subfolder with the specified name in the current folder. This method also specifies what to do if a subfolder with the same name already exists in the current folder.

CreateFolderAsync(String)

Creates a new subfolder with the specified name in the current folder.

public:
 virtual IAsyncOperation<StorageFolder ^> ^ CreateFolderAsync(Platform::String ^ desiredName) = CreateFolderAsync;

/// [Windows.Foundation.Metadata.Overload("CreateFolderAsyncOverloadDefaultOptions")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFolder> CreateFolderAsync(winrt::hstring const& desiredName);

[Windows.Foundation.Metadata.Overload("CreateFolderAsyncOverloadDefaultOptions")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFolder> CreateFolderAsync(string desiredName);

function createFolderAsync(desiredName)

Public Function CreateFolderAsync (desiredName As String) As IAsyncOperation(Of StorageFolder)

Parameters

desiredName

String

Platform::String

winrt::hstring

The name of the new subfolder to create in the current folder.

Returns

IAsyncOperation<StorageFolder>

When this method completes, it returns a StorageFolder that represents the new subfolder.

Implements

M:Windows.Storage.IStorageFolder.CreateFolderAsync(System.String) M:Windows.Storage.IStorageFolder.CreateFolderAsync(Platform::String) M:Windows.Storage.IStorageFolder.CreateFolderAsync(winrt::hstring)

Attributes

OverloadAttribute RemoteAsyncAttribute

Exceptions

FileNotFoundException

The folder name contains invalid characters, or the format of the folder name is incorrect. Check the value of desiredName.

UnauthorizedAccessException

You don't have permission to create a subfolder in the current folder.

Examples

The following example shows how to create a new StorageFolder in the current folder by calling the CreateFolderAsync(String, CreationCollisionOption) overloaded method. This example explicitly specifies a value for options that causes the operation to fail if a folder with the specified desiredName already exists in the current folder.

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

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

// Create a new subfolder in the current folder.
// Raise an exception if the folder already exists.
string desiredName = "Subfolder";
StorageFolder newFolder =
    await localFolder.CreateFolderAsync(desiredName, CreationCollisionOption.FailIfExists);

IAsyncAction MainPage::ExampleCoroutineAsync()
{
    // Get the app's local folder.
    Windows::Storage::StorageFolder localFolder{ Windows::Storage::ApplicationData::Current().LocalFolder() };

    // Create a new subfolder in the current folder.
    // Throw an exception if it already exists.
    std::wstring desiredName{ L"Subfolder" };
    Windows::Storage::StorageFolder folder{ co_await localFolder.CreateFolderAsync(desiredName, Windows::Storage::CreationCollisionOption::FailIfExists) };

    // Do something with folder.
}

//Get app's local folder
StorageFolder^ localFolder = Windows::Storage::ApplicationData::Current->LocalFolder;

// Create a new subfolder in the current folder
// Raise an exception if it already exists
String^ desiredName = "Subfolder";
create_task(localFolder->CreateFolderAsync(desiredName,Windows::Storage::CreationCollisionOption::FailIfExists)).then([](StorageFolder^ folder)
{
   //Do something with folder
});

Remarks

This method uses the FailIfExists value from the CreationCollisionOption enumeration by default. That is, this method raises an exception if a subfolder with the same name already exists in the current folder. If you want to handle a folder name collision in a different way, call the CreateFolderAsync(String, CreationCollisionOption) method.

If you try to create a subfolder in a virtual folder like a library, or a folder that represents a container for a group of files (for example, the return value from some overloads of the GetFoldersAsync method), the CreateFolderAsync method may fail.

See also

• CreateFolderAsync(String, CreationCollisionOption)

CreateFolderAsync(String, CreationCollisionOption)

Creates a new subfolder with the specified name in the current folder. This method also specifies what to do if a subfolder with the same name already exists in the current folder.

public:
 virtual IAsyncOperation<StorageFolder ^> ^ CreateFolderAsync(Platform::String ^ desiredName, CreationCollisionOption options) = CreateFolderAsync;

/// [Windows.Foundation.Metadata.Overload("CreateFolderAsync")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFolder> CreateFolderAsync(winrt::hstring const& desiredName, CreationCollisionOption const& options);

[Windows.Foundation.Metadata.Overload("CreateFolderAsync")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFolder> CreateFolderAsync(string desiredName, CreationCollisionOption options);

function createFolderAsync(desiredName, options)

Public Function CreateFolderAsync (desiredName As String, options As CreationCollisionOption) As IAsyncOperation(Of StorageFolder)

Parameters

desiredName

String

Platform::String

winrt::hstring

The name of the new subfolder to create in the current folder.

options

CreationCollisionOption

One of the enumeration values that determines how to handle the collision if a subfolder with the specified desiredName already exists in the current folder.

Returns

IAsyncOperation<StorageFolder>

When this method completes, it returns a StorageFolder that represents the new subfolder.

Implements

M:Windows.Storage.IStorageFolder.CreateFolderAsync(System.String,Windows.Storage.CreationCollisionOption) M:Windows.Storage.IStorageFolder.CreateFolderAsync(Platform::String,Windows.Storage.CreationCollisionOption) M:Windows.Storage.IStorageFolder.CreateFolderAsync(winrt::hstring,Windows.Storage.CreationCollisionOption)

Attributes

OverloadAttribute RemoteAsyncAttribute

Exceptions

FileNotFoundException

The folder name contains invalid characters, or the format of the folder name is incorrect. Check the value of desiredName.

UnauthorizedAccessException

You don't have permission to create a subfolder in the current folder.

Remarks

If a folder with the specified desiredName already exists in the current folder, the specified CreationCollisionOption determines how to handle the collision.

See also

• CreateFolderAsync(String)