RandomAccessStream.CopyAsync 方法

参考

定义

命名空间:: Windows.Storage.Streams

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

重载

CopyAsync(IInputStream, IOutputStream)	将源流复制到目标流。
CopyAsync(IInputStream, IOutputStream, UInt64)	将指定数量的字节从源流复制到目标流。

CopyAsync(IInputStream, IOutputStream)

编辑

将源流复制到目标流。

public:
 static IAsyncOperationWithProgress<unsigned long long, unsigned long long> ^ CopyAsync(IInputStream ^ source, IOutputStream ^ destination);

/// [Windows.Foundation.Metadata.Overload("CopyAsync")]
/// [Windows.Foundation.Metadata.RemoteAsync]
 static IAsyncOperationWithProgress<uint64_t, uint64_t> CopyAsync(IInputStream const& source, IOutputStream const& destination);

[Windows.Foundation.Metadata.Overload("CopyAsync")]
[Windows.Foundation.Metadata.RemoteAsync]
public static IAsyncOperationWithProgress<ulong,ulong> CopyAsync(IInputStream source, IOutputStream destination);

function copyAsync(source, destination)

Public Shared Function CopyAsync (source As IInputStream, destination As IOutputStream) As IAsyncOperationWithProgress(Of ULong, ULong)

参数

source: IInputStream

要从中复制数据的流。

destination: IOutputStream

要将数据复制到的流。

IAsyncOperationWithProgress<UInt64,UInt64>

Windows.Foundation.IAsyncOperationWithProgress<unsigned long long,unsigned long long>

IAsyncOperationWithProgress<uint64_t,uint64_t>

字节编写器操作。第一个整数表示写入的字节数。第二个整数表示写入操作的进度。

属性: OverloadAttribute RemoteAsyncAttribute

另请参阅

适用于

CopyAsync(IInputStream, IOutputStream, UInt64)

编辑

将指定数量的字节从源流复制到目标流。

public:
 static IAsyncOperationWithProgress<unsigned long long, unsigned long long> ^ CopyAsync(IInputStream ^ source, IOutputStream ^ destination, unsigned long long bytesToCopy);

/// [Windows.Foundation.Metadata.Overload("CopySizeAsync")]
/// [Windows.Foundation.Metadata.RemoteAsync]
 static IAsyncOperationWithProgress<uint64_t, uint64_t> CopyAsync(IInputStream const& source, IOutputStream const& destination, uint64_t const& bytesToCopy);

[Windows.Foundation.Metadata.Overload("CopySizeAsync")]
[Windows.Foundation.Metadata.RemoteAsync]
public static IAsyncOperationWithProgress<ulong,ulong> CopyAsync(IInputStream source, IOutputStream destination, ulong bytesToCopy);

function copyAsync(source, destination, bytesToCopy)

Public Shared Function CopyAsync (source As IInputStream, destination As IOutputStream, bytesToCopy As ULong) As IAsyncOperationWithProgress(Of ULong, ULong)