ReadAsync | readAsync method
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FileInputStream.ReadAsync | readAsync method

Returns an asynchronous byte reader object.

Syntax


public:
IAsyncOperationWithProgress<IBuffer, UInt32>^ ReadAsync(
  IBuffer^ buffer, 
  unsigned int count, 
  InputStreamOptions options
)

Parameters

buffer

Type: IBuffer

The buffer into which the asynchronous read operation places the bytes that are read.

count

Type: Number [JavaScript] | System.UInt32 [.NET] | uint32 [C++]

The number of bytes to read that is less than or equal to the Capacity value.

options

Type: InputStreamOptions

Specifies the type of the asynchronous read operation.

Return value

Type: IAsyncOperationWithProgress<IBuffer, UInt32>

The asynchronous operation.

Requirements (Windows 10 device family)

Device family

Universal, introduced version 10.0.10240.0

API contract

Windows.Foundation.UniversalApiContract, introduced version 1.0

Namespace

Windows.Storage.Streams
Windows::Storage::Streams [C++]

Metadata

Windows.Foundation.UniversalApiContract.winmd

Requirements (Windows 8.x and Windows Phone 8.x)

Minimum supported client

Windows 8

Minimum supported server

Windows Server 2012

Minimum supported phone

Windows Phone 8

Namespace

Windows.Storage.Streams
Windows::Storage::Streams [C++]

Metadata

Windows.winmd

See also

FileInputStream

 

 

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