处理后调用MemoryStream.ToArray（）危险吗？

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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：

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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