是否有可能克隆.NET流？ [英] Is it Possible to Clone a .NET Stream?

问题描述

我们可以克隆一个流？

推荐答案

没有，流通常是指某种（套接字，文件句柄等）的本地资源，所以他们不能被克隆和序列化。此外许多流是正向的，并且不支持查找，所以你可能甚至无法从流重新读取。

No, streams usually refer to local resources of some kind (a socket, a file handle, etc) and so they can't be cloned or serialized. Furthermore many streams are forward-only and do not support seeking so you might not even be able to re-read from a stream.

您可以从一个可读的流做的虽然是将其复制到MemoryStream它可以移动作为字节数组。

What you can do from a readable stream though is copy it into a MemoryStream which can be moved around as a byte array.

请参阅以下职位为code片断展示了如何做到这一点： <一href="http://stackoverflow.com/questions/230128/best-way-to-copy-between-two-stream-instances-c">http://stackoverflow.com/questions/230128/best-way-to-copy-between-two-stream-instances-c

See the following post for a code snippet showing how to do this: http://stackoverflow.com/questions/230128/best-way-to-copy-between-two-stream-instances-c

public static void CopyStream(Stream input, Stream output)
{
    byte[] buffer = new byte[32768];
    while (true)
    {
        int read = input.Read (buffer, 0, buffer.Length);
        if (read <= 0)
            return;
        output.Write (buffer, 0, read);
    }
}

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