Creates an asynchronous byte writer operation object.
Syntax
HRESULT WriteAsync(
  [in]          IBuffer                                        *buffer,
  [out, retval] IAsyncOperationWithProgress<IBuffer *, UINT32> **operation
);
Parameters
- buffer [in] 
 The buffer into which the asynchronous write operation writes the bytes.
- operation [out, retval] 
 The asynchronous operation for writing the byte stream.
Return value
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
Calling any method before all preceding calls have completed on this instance produces unspecified and non-deterministic results.
Requirements
| Minimum supported client | Windows 8 | 
| Minimum supported server | Windows Server 2012 | 
| Header | Robytestream.h | 
| IDL | Robytestream.idl |