Image.FromStream不保存对基础流的引用 [英] Image.FromStream does not hold a ref to the underlying stream

问题描述

我有一些可以的代码

MemoryStream ms = new MemoryStream();
...
return Image.FromStream(ms);

由于Image对象不保留对流的引用，因此它以非常折衷的方式失败，因此，如果GC踢出该对象会导致GDI +错误，则该对象可以被处置.

It fails in very eclectic ways since the Image object does not hold a ref to the stream, so it can get disposed if the GC kicks in which results in GDI+ errors.

如何解决此问题(不将流保存到磁盘或更改方法信号)?

How do I work around this (without saving the stream to disk, or altering my method sigs) ?

推荐答案

在我看来这不太可能-几乎所有Image.FromStream的使用都会引起问题.

This seems highly unlikely to me - it would cause a problem for almost any use of Image.FromStream.

对我来说，似乎更有可能处置了您的MemoryStream，这是不应该的.

It seems more likely to me that something's disposing of your MemoryStream, which it shouldn't.

您能提供一个简短但完整的程序来演示该问题吗?强制垃圾回收应该使复制相对容易-您甚至可以使用终结器创建从MemoryStream派生的自己的类，以显示是否确实收集了 (嗯，至少已完成)

Could you provide a short but complete program which demonstrates the problem? Forcing garbage collection should make it relatively easy to reproduce - you could even create your own class deriving from MemoryStream with a finalizer to show whether or not it really is being collected (well, finalized at least).

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