OutputStreamOverStream OutputStreamOverStream OutputStreamOverStream OutputStreamOverStream Class


Provides a Windows Runtime output stream for an IStream base implementation.

public : sealed class OutputStreamOverStream : IClosable, IOutputStreampublic sealed class OutputStreamOverStream : IDisposable, IOutputStreamPublic NotInheritable Class OutputStreamOverStream Implements IDisposable, IOutputStream// You can use this class in JavaScript.
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


The InputStreamOverStream, OutputStreamOverStream, and RandomAccessStreamOverStream classes are interop helpers to convert between the Windows Runtime stream types, which are natively asynchronous, and the Component Object Model (COM) IStream types, which are natively synchronous.

These helper classes make it easier for to reuse legacy code when you transition to the Windows Runtime stream types.


Close() Close() Close() Close()

Closes the current stream and releases system resources.

public : void Close()This member is not implemented in C#This member is not implemented in VB.Net// You can use this method in JavaScript.

Dispose() Dispose() Dispose() Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

This member is not implemented in C++void Dispose()Sub Disposevoid Dispose()

FlushAsync() FlushAsync() FlushAsync() FlushAsync()

Flushes data asynchronously in a sequential stream.

public : IAsyncOperation<PlatForm::Boolean> FlushAsync()public IAsyncOperation<bool> FlushAsync()Public Function FlushAsync() As IAsyncOperation( Of bool )// You can use this method in JavaScript.

The stream flush operation.


The FlushAsync method may produce latencies and does not always guarantee durable and coherent storage of data. It's generally recommended to avoid this method if possible.

WriteAsync(IBuffer) WriteAsync(IBuffer) WriteAsync(IBuffer) WriteAsync(IBuffer)

Writes data asynchronously in a sequential stream.

public : IAsyncOperationWithProgress<unsigned int, unsigned int> WriteAsync(IBuffer buffer)public IAsyncOperationWithProgress<uint, uint> WriteAsync(IBuffer buffer)Public Function WriteAsync(buffer As IBuffer) As IAsyncOperationWithProgress( Of uint, uint )// You can use this method in JavaScript.
IBuffer IBuffer IBuffer IBuffer

The buffer into which the asynchronous writer operation writes.


The byte writer operation.

See Also