通过

FileRandomAccessStream.ReadAsync(IBuffer, UInt32, InputStreamOptions) 方法

  • 参考

定义

命名空间:
Windows.Storage.Streams
编辑

返回异步字节读取器对象。

public:
 virtual IAsyncOperationWithProgress<IBuffer ^, unsigned int> ^ ReadAsync(IBuffer ^ buffer, unsigned int count, InputStreamOptions options) = ReadAsync;
IAsyncOperationWithProgress<IBuffer, uint32_t> ReadAsync(IBuffer const& buffer, uint32_t const& count, InputStreamOptions const& options);
public IAsyncOperationWithProgress<IBuffer,uint> ReadAsync(IBuffer buffer, uint count, InputStreamOptions options);
function readAsync(buffer, count, options)
Public Function ReadAsync (buffer As IBuffer, count As UInteger, options As InputStreamOptions) As IAsyncOperationWithProgress(Of IBuffer, UInteger)

参数

buffer
IBuffer

异步读取操作在其中放置读取字节的缓冲区。

count
UInt32

unsigned int

uint32_t

小于或等于 Capacity 值的要读取的字节数。

options
InputStreamOptions

指定异步读取操作的类型。

返回

IAsyncOperationWithProgress<IBuffer,UInt32>

Windows.Foundation.IAsyncOperationWithProgress<Windows.Storage.Streams.IBuffer,unsigned int>

IAsyncOperationWithProgress<IBuffer,uint32_t>

异步操作。

实现

M:Windows.Storage.Streams.IInputStream.ReadAsync(Windows.Storage.Streams.IBuffer,System.UInt32,Windows.Storage.Streams.InputStreamOptions) M:Windows.Storage.Streams.IInputStream.ReadAsync(Windows.Storage.Streams.IBuffer,unsigned int,Windows.Storage.Streams.InputStreamOptions) M:Windows.Storage.Streams.IInputStream.ReadAsync(Windows.Storage.Streams.IBuffer,uint32_t,Windows.Storage.Streams.InputStreamOptions)

适用于