什么是IDisposable的呢？ [英] What is IDisposable for?

问题描述

如果.NET有垃圾回收，那么为什么你一定要明确地调用的IDisposable ？

If .NET has garbage collection then why do you have to explicitly call IDisposable?

推荐答案

垃圾收集是内存。您需要处置非内存资源 - 文件句柄，插座，GDI +处理，数据库连接等等。这是典型的什么下部的一个的IDisposable 键入，尽管实际的手柄可以说是相当很长的路要走下来引用链。例如，您可能会处置的的XmlWriter 其中配置一台的StreamWriter 它有一个参考，它部署在的FileStream 的是的有一个参考，它释放的文件句柄本身。

Garbage collection is for memory. You need to dispose of non-memory resources - file handles, sockets, GDI+ handles, database connections etc. That's typically what underlies an IDisposable type, although the actual handle can be quite a long way down a chain of references. For example, you might Dispose an XmlWriter which disposes a StreamWriter it has a reference to, which disposes the FileStream it has a reference to, which releases the file handle itself.

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