FileInformation.OpenAsync 方法

定义

重载

OpenAsync(FileAccessMode)

在指定文件上打开具有指定选项的随机访问流。

OpenAsync(FileAccessMode, StorageOpenOptions)

在指定文件上打开具有指定选项的随机访问流。

OpenAsync(FileAccessMode)

在指定文件上打开具有指定选项的随机访问流。

public:
 virtual IAsyncOperation<IRandomAccessStream ^> ^ OpenAsync(FileAccessMode accessMode) = OpenAsync;
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<IRandomAccessStream> OpenAsync(FileAccessMode const& accessMode);
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<IRandomAccessStream> OpenAsync(FileAccessMode accessMode);
function openAsync(accessMode)
Public Function OpenAsync (accessMode As FileAccessMode) As IAsyncOperation(Of IRandomAccessStream)

参数

accessMode
FileAccessMode

指定要允许的访问类型的枚举值之一。

返回

此方法完成后,它将返回一个 IRandomAccessStream ,其中包含请求的随机访问流。

实现

属性

另请参阅

适用于

OpenAsync(FileAccessMode, StorageOpenOptions)

在指定文件上打开具有指定选项的随机访问流。

public:
 virtual IAsyncOperation<IRandomAccessStream ^> ^ OpenAsync(FileAccessMode accessMode, StorageOpenOptions options) = OpenAsync;
/// [Windows.Foundation.Metadata.Overload("OpenWithOptionsAsync")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<IRandomAccessStream> OpenAsync(FileAccessMode const& accessMode, StorageOpenOptions const& options);
[Windows.Foundation.Metadata.Overload("OpenWithOptionsAsync")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<IRandomAccessStream> OpenAsync(FileAccessMode accessMode, StorageOpenOptions options);
function openAsync(accessMode, options)
Public Function OpenAsync (accessMode As FileAccessMode, options As StorageOpenOptions) As IAsyncOperation(Of IRandomAccessStream)

参数

accessMode
FileAccessMode

指定要允许的访问类型的枚举值之一。

options
StorageOpenOptions

枚举值的按位组合,指定用于打开流的选项。

返回

此方法完成后,它将返回一个 IRandomAccessStream ,其中包含请求的随机访问流。

实现

属性

另请参阅

适用于