StreamCopyOperation.CopyToAsync 方法
定义
重要
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重载
| CopyToAsync(Stream, Stream, Nullable<Int64>, CancellationToken) |
从源流中异步读取给定的字节数，并将其写入另一个流。 |
| CopyToAsync(Stream, Stream, Nullable<Int64>, Int32, CancellationToken) |
使用指定的缓冲区大小，异步读取源流中的给定字节数，并将其写入另一个流。 |
CopyToAsync(Stream, Stream, Nullable<Int64>, CancellationToken)
- Source:
- StreamCopyOperation.cs
- Source:
- StreamCopyOperation.cs
- Source:
- StreamCopyOperation.cs
从源流中异步读取给定的字节数，并将其写入另一个流。
public:
static System::Threading::Tasks::Task ^ CopyToAsync(System::IO::Stream ^ source, System::IO::Stream ^ destination, Nullable<long> count, System::Threading::CancellationToken cancel);public static System.Threading.Tasks.Task CopyToAsync (System.IO.Stream source, System.IO.Stream destination, long? count, System.Threading.CancellationToken cancel);static member CopyToAsync : System.IO.Stream * System.IO.Stream * Nullable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Shared Function CopyToAsync (source As Stream, destination As Stream, count As Nullable(Of Long), cancel As CancellationToken) As Task参数
- source
- Stream
将从中复制内容的流。
- destination
- Stream
当前流的内容将复制到的流。
- cancel
- CancellationToken
要监视取消请求的标记。 默认值是 None。
返回
表示异步复制操作的任务。
适用于
CopyToAsync(Stream, Stream, Nullable<Int64>, Int32, CancellationToken)
- Source:
- StreamCopyOperation.cs
- Source:
- StreamCopyOperation.cs
- Source:
- StreamCopyOperation.cs
使用指定的缓冲区大小，异步读取源流中的给定字节数，并将其写入另一个流。
public:
static System::Threading::Tasks::Task ^ CopyToAsync(System::IO::Stream ^ source, System::IO::Stream ^ destination, Nullable<long> count, int bufferSize, System::Threading::CancellationToken cancel);public static System.Threading.Tasks.Task CopyToAsync (System.IO.Stream source, System.IO.Stream destination, long? count, int bufferSize, System.Threading.CancellationToken cancel);static member CopyToAsync : System.IO.Stream * System.IO.Stream * Nullable<int64> * int * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Shared Function CopyToAsync (source As Stream, destination As Stream, count As Nullable(Of Long), bufferSize As Integer, cancel As CancellationToken) As Task参数
- source
- Stream
将从中复制内容的流。
- destination
- Stream
当前流的内容将复制到的流。
- bufferSize
- Int32
缓冲区的大小（以字节为单位）。 此值必须大于零。 默认大小为 4096。
- cancel
- CancellationToken
要监视取消请求的标记。 默认值是 None。
返回
表示异步复制操作的任务。