处理后调用MemoryStream.ToArray（）危险吗？ [英] Is calling MemoryStream.ToArray() dangerous after disposing?

问题描述

在下面的代码中，GC是否有可能清理出MemoryStream，从而使ToArray失败，因为它在using语句之外？

In the below code, is there any chance the GC will clean out the MemoryStream so that ToArray will fail, since it is outside the using statement?

private static byte[] getBytes()
{
    MemoryStream ms = null;

    using (ms = new MemoryStream())
    {
        // ...
    }

    return ms.ToArray();
}

推荐答案

不，没有机会那。这样做很安全- MemoryStream 对字节数组有很强的引用。

No, there's no chance of that. It's safe to do - the MemoryStream keeps a strong reference to the byte array.

我看看是否可以找到有关担保的任何文档...

I'll see if I can find any documentation about guarantees...

编辑：有点...

来自 MemoryStream.Close ：

一次 MemoryStream 缓冲区仍然可用流已关闭。

The buffer is still available on a MemoryStream once the stream has been closed.

不能保证在 Dispose ，但已记录为调用 Stream.Close 。

Admittedly that doesn't guarantee it for Dispose, but that's documented to call Stream.Close.

MemoryStream.Dispose（bool ） 可以被覆盖以释放该数组，但是根据我的经验，这不是一个大突破，这是一个重大突破。

MemoryStream.Dispose(bool) could then be overridden to release the array, but it doesn't in my experience, and it would be a breaking change at this point.

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